- 06 Nov, 2020 32 commits
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Lee Jones authored
A note from the vendor: "The hardware used with synclink.c and synclinkmp.c has not been manufactured for 15 years and was low volume. The chances of either driver still being in use is very low. Not even Microgate (me) has the ability to test either anymore (no hardware). I don’t know the policy about driver removal, but I think both could be removed without upsetting anyone." Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by:
Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20201105123357.708813-2-lee.jones@linaro.orgSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Thomas Bogendoerfer authored
Commit 625326ea ("MIPS: Remove PNX833x alias NXP_STB22x") removed support for PNX833x, so it's time to remove serial driver, too. Signed-off-by:
Thomas Bogendoerfer <tsbogend@alpha.franken.de> Link: https://lore.kernel.org/r/20201106130332.103476-1-tsbogend@alpha.franken.deSigned-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/synclink.c:7708: warning: Function parameter or member 'txqueue' not described in 'hdlcdev_tx_timeout' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: paulkf@microgate.com Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/hvc/hvc_opal.c:106:6: warning: no previous prototype for ‘hvc_opal_hvsi_hangup’ [-Wmissing-prototypes] Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/hvc/hvc_vio.c:181:6: warning: no previous prototype for ‘hvterm_hvsi_hangup’ [-Wmissing-prototypes] 181 | void hvterm_hvsi_hangup(struct hvc_struct *hp, int data) | ^~~~~~~~~~~~~~~~~~ Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/serial/serial-tegra.c:94: warning: Function parameter or member 'fifo_mode_enable_status' not described in 'tegra_uart_chip_data' drivers/tty/serial/serial-tegra.c:94: warning: Function parameter or member 'uart_max_port' not described in 'tegra_uart_chip_data' drivers/tty/serial/serial-tegra.c:94: warning: Function parameter or member 'max_dma_burst_bytes' not described in 'tegra_uart_chip_data' drivers/tty/serial/serial-tegra.c:94: warning: Function parameter or member 'error_tolerance_low_range' not described in 'tegra_uart_chip_data' drivers/tty/serial/serial-tegra.c:94: warning: Function parameter or member 'error_tolerance_high_range' not described in 'tegra_uart_chip_data' Cc: Laxman Dewangan <ldewangan@nvidia.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: "Christian König" <christian.koenig@amd.com> Cc: linux-serial@vger.kernel.org Cc: linux-tegra@vger.kernel.org Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linaro-mm-sig@lists.linaro.org Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/tty_ldisc.c:160: warning: Function parameter or member 'tty' not described in 'tty_ldisc_get' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/serial/stm32-usart.c: In function ‘stm32_transmit_chars_dma’: drivers/tty/serial/stm32-usart.c:353:15: warning: variable ‘cookie’ set but not used [-Wunused-but-set-variable] drivers/tty/serial/stm32-usart.c: In function ‘stm32_of_dma_rx_probe’: drivers/tty/serial/stm32-usart.c:1090:15: warning: variable ‘cookie’ set but not used [-Wunused-but-set-variable] Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Cc: Gerald Baeza <gerald.baeza@st.com> Cc: linux-serial@vger.kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/synclinkmp.c:1808: warning: Function parameter or member 'txqueue' not described in 'hdlcdev_tx_timeout' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: paulkf@microgate.com Signed-off-by:
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Lee Jones authored
Also supply a missing member description. Fixes the following W=1 kernel build warning(s): drivers/tty/serial/sifive.c:157: warning: cannot understand function prototype: 'struct sifive_serial_port ' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: linux-serial@vger.kernel.org Cc: linux-riscv@lists.infradead.org Signed-off-by:
Palmer Dabbelt <palmerdabbelt@google.com> Acked-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/serial/serial-tegra.c:85: warning: cannot understand function prototype: 'struct tegra_uart_chip_data ' Cc: Laxman Dewangan <ldewangan@nvidia.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: "Christian König" <christian.koenig@amd.com> Cc: linux-serial@vger.kernel.org Cc: linux-tegra@vger.kernel.org Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linaro-mm-sig@lists.linaro.org Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/synclink_gt.c:633: warning: Function parameter or member 'tty' not described in 'ldisc_receive_buf' drivers/tty/synclink_gt.c:633: warning: Function parameter or member 'data' not described in 'ldisc_receive_buf' drivers/tty/synclink_gt.c:633: warning: Function parameter or member 'flags' not described in 'ldisc_receive_buf' drivers/tty/synclink_gt.c:633: warning: Function parameter or member 'count' not described in 'ldisc_receive_buf' drivers/tty/synclink_gt.c:1683: warning: Function parameter or member 'txqueue' not described in 'hdlcdev_tx_timeout' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: paulkf@microgate.com Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/serial/xilinx_uartps.c:205: warning: Function parameter or member 'cts_override' not described in 'cdns_uart' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Michal Simek <michal.simek@xilinx.com> Cc: linux-serial@vger.kernel.org Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/serial/ifx6x60.c:553: warning: Function parameter or member 'tty' not described in 'ifx_port_activate' drivers/tty/serial/ifx6x60.c:728: warning: Function parameter or member 't' not described in 'ifx_spi_io' drivers/tty/serial/ifx6x60.c:728: warning: Excess function parameter 'data' description in 'ifx_spi_io' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Filip Aben <f.aben@option.com> Cc: Joseph Barrow <d.barow@option.com> Cc: Jan Dumon <j.dumon@option.com> Cc: Russ Gorby <russ.gorby@intel.com> Cc: linux-serial@vger.kernel.org Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/serial/msm_serial.c: In function ‘msm_complete_tx_dma’: drivers/tty/serial/msm_serial.c:429:18: warning: variable ‘status’ set but not used [-Wunused-but-set-variable] Cc: Andy Gross <agross@kernel.org> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Robert Love <rlove@google.com> Cc: linux-arm-msm@vger.kernel.org Cc: linux-serial@vger.kernel.org Signed-off-by:
Jeffrey Hugo <jeffrey.l.hugo@gmail.com> Link: https://lore.kernel.org/r/20201104193549.4026187-21-lee.jones@linaro.orgSigned-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/serial/lpc32xx_hs.c: In function ‘__serial_uart_flush’: drivers/tty/serial/lpc32xx_hs.c:244:6: warning: variable ‘tmp’ set but not used [-Wunused-but-set-variable] Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Vladimir Zapolskiy <vz@mleia.com> Cc: Sylvain Lemieux <slemieux.tyco@gmail.com> Cc: Kevin Wells <kevin.wells@nxp.com> Cc: Roland Stigge <stigge@antcom.de> Cc: linux-serial@vger.kernel.org Signed-off-by:
Vladimir Zapolskiy <vz@mleia.com> Link: https://lore.kernel.org/r/20201104193549.4026187-20-lee.jones@linaro.orgSigned-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/n_gsm.c:85: warning: Function parameter or member 'ref' not described in 'gsm_mux_net' drivers/tty/n_gsm.c:85: warning: Function parameter or member 'dlci' not described in 'gsm_mux_net' drivers/tty/n_gsm.c:664: warning: Function parameter or member 'dlci' not described in 'gsm_data_kick' drivers/tty/n_gsm.c:1015: warning: Function parameter or member 'clen' not described in 'gsm_process_modem' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Signed-off-by:
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Lee Jones authored
When !ACPI 'sbsa_uart_acpi_match' is not referenced. Fixes the following W=1 kernel build warning(s): drivers/tty/serial/amba-pl011.c:2792:36: warning: ‘sbsa_uart_acpi_match’ defined but not used [-Wunused-const-variable=] Cc: Russell King <linux@armlinux.org.uk> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: linux-serial@vger.kernel.org Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/pty.c:710: warning: Function parameter or member 'file' not described in 'ptm_unix98_lookup' drivers/tty/pty.c:726: warning: Function parameter or member 'file' not described in 'pts_unix98_lookup' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: "C. Scott Ananian" <cananian@alumni.princeton.edu> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/tty_audit.c:91: warning: Function parameter or member 'buf' not described in 'tty_audit_buf_push' drivers/tty/tty_audit.c:129: warning: Function parameter or member 'sig' not described in 'tty_audit_fork' drivers/tty/tty_audit.c:137: warning: Function parameter or member 'tty' not described in 'tty_audit_tiocsti' drivers/tty/tty_audit.c:137: warning: Function parameter or member 'ch' not described in 'tty_audit_tiocsti' drivers/tty/tty_audit.c:202: warning: Function parameter or member 'tty' not described in 'tty_audit_add_data' drivers/tty/tty_audit.c:202: warning: Function parameter or member 'data' not described in 'tty_audit_add_data' drivers/tty/tty_audit.c:202: warning: Function parameter or member 'size' not described in 'tty_audit_add_data' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Miloslav Trmac <mitr@redhat.com> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/serial/8250/serial_cs.c: In function ‘multi_config’: drivers/tty/serial/8250/serial_cs.c:562:7: warning: variable ‘err’ set but not used [-Wunused-but-set-variable] Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Colin Ian King <colin.king@canonical.com> Cc: "David A. Hinds" <dahinds@users.sourceforge.net> Cc: linux-serial@vger.kernel.org Signed-off-by:
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Lee Jones authored
Demote non-conformant headers and supply some missing descriptions. Fixes the following W=1 kernel build warning(s): drivers/tty/tty_io.c:218: warning: Function parameter or member 'file' not described in 'tty_free_file' drivers/tty/tty_io.c:566: warning: Function parameter or member 'exit_session' not described in '__tty_hangup' drivers/tty/tty_io.c:1077: warning: Function parameter or member 'tty' not described in 'tty_send_xchar' drivers/tty/tty_io.c:1077: warning: Function parameter or member 'ch' not described in 'tty_send_xchar' drivers/tty/tty_io.c:1155: warning: Function parameter or member 'file' not described in 'tty_driver_lookup_tty' drivers/tty/tty_io.c:1508: warning: Function parameter or member 'tty' not described in 'release_tty' drivers/tty/tty_io.c:1508: warning: Function parameter or member 'idx' not described in 'release_tty' drivers/tty/tty_io.c:2973: warning: Function parameter or member 'driver' not described in 'alloc_tty_struct' drivers/tty/tty_io.c:2973: warning: Function parameter or member 'idx' not described in 'alloc_tty_struct' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Nick Holloway <alfie@dcs.warwick.ac.uk> Cc: -- <julian@uhunix.uhcc.hawaii.edu> Cc: Marko Kohtala <Marko.Kohtala@hut.fi> Cc: Bill Hawes <whawes@star.net> Cc: "C. Scott Ananian" <cananian@alumni.princeton.edu> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Andrew Morton <andrewm@uow.edu.eu> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/serial/jsm/jsm_cls.c: In function ‘cls_copy_data_from_uart_to_queue’: drivers/tty/serial/jsm/jsm_cls.c:400:7: warning: variable ‘discard’ set but not used [-Wunused-but-set-variable] Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: linux-serial@vger.kernel.org Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/n_tty.c:405: warning: Function parameter or member 'tty' not described in 'is_continuation' drivers/tty/n_tty.c:1701: warning: Function parameter or member 'flow' not described in 'n_tty_receive_buf_common' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: "Andrew J. Kroll" <ag784@freenet.buffalo.edu> Cc: processes-Sapan Bhatia <sapan@corewars.org> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/vt/consolemap.c:739: warning: Function parameter or member 'ct' not described in 'con_get_unimap' drivers/tty/vt/consolemap.c:739: warning: Function parameter or member 'uct' not described in 'con_get_unimap' drivers/tty/vt/consolemap.c:739: warning: Function parameter or member 'list' not described in 'con_get_unimap' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Jakub Jelinek <jj@ultra.linux.cz> Cc: Stanislav Voronyi <stas@cnti.uanet.kharkov.ua> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/tty_jobctrl.c:32: warning: Function parameter or member 'sig' not described in '__tty_check_change' drivers/tty/tty_jobctrl.c:95: warning: Function parameter or member 'tty' not described in '__proc_set_tty' drivers/tty/tty_jobctrl.c:344: warning: Function parameter or member 'file' not described in 'tiocsctty' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/tty_port.c:633: warning: Function parameter or member 'port' not described in 'tty_port_close' drivers/tty/tty_port.c:633: warning: Function parameter or member 'tty' not described in 'tty_port_close' drivers/tty/tty_port.c:633: warning: Function parameter or member 'filp' not described in 'tty_port_close' drivers/tty/tty_port.c:672: warning: Function parameter or member 'port' not described in 'tty_port_open' drivers/tty/tty_port.c:672: warning: Function parameter or member 'tty' not described in 'tty_port_open' drivers/tty/tty_port.c:672: warning: Function parameter or member 'filp' not described in 'tty_port_open' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/tty_buffer.c:592: warning: Function parameter or member 'limit' not described in 'tty_buffer_set_limit' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/tty_ldisc.c:883:6: warning: no previous prototype for ‘tty_sysctl_init’ [-Wmissing-prototypes] 883 | void tty_sysctl_init(void) | ^~~~~~~~~~~~~~~ Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Nick Holloway <alfie@dcs.warwick.ac.uk> Cc: -- <julian@uhunix.uhcc.hawaii.edu> Cc: Marko Kohtala <Marko.Kohtala@hut.fi> Cc: Bill Hawes <whawes@star.net> Cc: "C. Scott Ananian" <cananian@alumni.princeton.edu> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Andrew Morton <andrewm@uow.edu.eu> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/tty_baudrate.c:234: warning: Function parameter or member 'tty' not described in 'tty_encode_baud_rate' Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Signed-off-by:
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Lee Jones authored
Fixes the following W=1 kernel build warning(s): drivers/tty/serdev/core.c: In function ‘serdev_controller_remove’: drivers/tty/serdev/core.c:811: warning: Function parameter or member 'owner' not described in '__serdev_device_driver_register' Cc: Rob Herring <robh@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: linux-serial@vger.kernel.org Signed-off-by:
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Lee Jones authored
No need to have a dummy variable here. Fixes the following W=1 kernel build warning(s): drivers/tty/serdev/core.c: In function ‘serdev_controller_remove’: drivers/tty/serdev/core.c:791:6: warning: variable ‘dummy’ set but not used [-Wunused-but-set-variable] Cc: Rob Herring <robh@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: linux-serial@vger.kernel.org Signed-off-by:
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- 04 Nov, 2020 8 commits
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Jiri Slaby authored
'puts_queue' currently loops over characters and employs the full tty buffer machinery for every character. Do the buffer allocation only once and copy all the character at once. This is achieved using tty_insert_flip_string instead of loop+tty_insert_flip_char. Signed-off-by:
Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20201029113222.32640-17-jslaby@suse.czSigned-off-by:
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Jiri Slaby authored
Instead of a 'for' loop with 'test_bit's to find a bit in a range, use find_next_bit to achieve the same in a simpler and faster manner. Signed-off-by:
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Jiri Slaby authored
Instead of a multiline macro, convert HW_RAW to an inline function. It allows for type checking of the parameter. And given we split the code into two tests, it is now more readable too. Signed-off-by:
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Jiri Slaby authored
Do the permission check on a single place. That is where perm is really checked. Signed-off-by:
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Jiri Slaby authored
Now that we removed the ugly handling of func_buf, remove unneeded declarations of func_* variables. The definitions are in the generated defkeymap.c_shipped, so we cannot really remove them (but we would love to). Signed-off-by:
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Jiri Slaby authored
Setting of function key strings is now very complex. It uses a global buffer 'func_buf' which is prefilled in defkeymap.c_shipped. Then there is also an index table called 'func_table'. So initially, we have something like this: char func_buf[] = "\e[[A\0" // for F1 "\e[[B\0" // for F2 ...; char *func_table[] = { func_buf + 0, // for F1 func_buf + 5, // for F2 ... } When a user changes some specific func string by KDSKBSENT, it is changed in 'func_buf'. If it is shorter or equal to the current one, it is handled by a very quick 'strcpy'. When the user's string is longer, the whole 'func_buf' is reallocated to allow expansion somewhere in the middle. The buffer before the user's string is copied, the user's string appended and the rest appended too. Now, the index table (func_table) needs to be recomputed, of course. One more complication is the held spinlock -- we have to unlock, reallocate, lock again and do the whole thing again to be sure noone raced with us. In this patch, we chose completely orthogonal approach: when the user's string is longer than the current one, we simply assign the 'kstrdup'ed copy to the index table (func_table) and modify func_buf in no way. We only need to make sure we free the old entries. So we need a bitmap is_kmalloc and free the old entries (but not the original func_buf rodata string). Also note that we do not waste so much space as previous approach. We only allocate space for single entries which are longer, while before, the whole buffer was duplicated plus space for the longer string. Signed-off-by: -
Jiri Slaby authored
KDGKBSENT (the getter) needs only 'user_kdgkb->kb_func' from the userspace, i.e. the index. Then it needs a buffer for a local copy of 'kb_string'. KDSKBSENT (the setter) needs a copy up to the length of 'user_kdgkb->kb_string'. That means, we obtain the index before the switch-case and use it in both paths and: 1) allocate full space in the getter case, and 2) copy the string only in the setter case. We do it by strndup_user helper now which was not available when this function was written. Given we copy the two members of 'struct kbsentry' separately, we no longer need a local definition. Hence we need to change all the sizeofs here too. Signed-off-by:
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Jiri Slaby authored
There are too many one-letter variables in vt_do_kdgkb_ioctl which is rather confusing. Rename 'i' to 'kb_func' and change its type to be the same as its originating value (struct kbsentry.kb_func) -- unsigned char. Signed-off-by:
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