Commit dffe969a authored by Anson Huang's avatar Anson Huang Committed by Dmitry Torokhov

Input: imx_sc_key - correct SCU message structure to avoid stack corruption

The SCU message's data field used for receiving response data from SCU
should be 32-bit width, as SCU will send back 32-bit width data.

This solves kernel panic when CONFIG_CC_HAVE_STACKPROTECTOR_SYSREG is
enabled.

[    1.950768] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted
[    1.980607] Workqueue: events imx_sc_check_for_events
[    1.985657] Call trace:
[    1.988104]  dump_backtrace+0x0/0x140
[    1.991768]  show_stack+0x14/0x20
[    1.995090]  dump_stack+0xb4/0xf8
[    1.998407]  panic+0x158/0x324
[    2.001463]  print_tainted+0x0/0xa8
[    2.004950]  imx_sc_check_for_events+0x18c/0x190
[    2.009569]  process_one_work+0x198/0x320
[    2.013579]  worker_thread+0x48/0x420
[    2.017252]  kthread+0xf0/0x120
[    2.020394]  ret_from_fork+0x10/0x18
[    2.023977] SMP: stopping secondary CPUs
[    2.027901] Kernel Offset: disabled
[    2.031391] CPU features: 0x0002,2100600c
[    2.035401] Memory Limit: none
Signed-off-by: default avatarAnson Huang <Anson.Huang@nxp.com>
Fixes: 688f1dfb ("Input: keyboard - imx_sc: Add i.MX system controller key support")
Link: https://lore.kernel.org/r/1573730499-2224-1-git-send-email-Anson.Huang@nxp.comSigned-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent cc12ba18
...@@ -35,7 +35,7 @@ struct imx_key_drv_data { ...@@ -35,7 +35,7 @@ struct imx_key_drv_data {
struct imx_sc_msg_key { struct imx_sc_msg_key {
struct imx_sc_rpc_msg hdr; struct imx_sc_rpc_msg hdr;
u8 state; u32 state;
}; };
static int imx_sc_key_notify(struct notifier_block *nb, static int imx_sc_key_notify(struct notifier_block *nb,
......
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