- 02 Aug, 2018 1 commit
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Mike Christie authored
When __transport_register_session is called from transport_register_session irqs will already have been disabled, so we do not want the unlock irq call to enable them until the higher level has done the final spin_unlock_irqrestore/ spin_unlock_irq. This has __transport_register_session use the save/restore call. Signed-off-by:
Mike Christie <mchristi@redhat.com> Reviewed-by:
Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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- 31 Jul, 2018 20 commits
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Bart Van Assche authored
The cxgbit driver expects that __iscsit_free_cmd() is called before the target core frees the command page list. Since this patch breaks the cxgbit driver, revert it. Reported-by:
Varun Prakash <varun@chelsio.com> Fixes: ed88f055 ("scsi: target/iscsi: Reduce number of __iscsit_free_cmd() callers") Signed-off-by:
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Mike Christie authored
We use unsigned long, size_t and u64 for dev_size. This has us standardize on u64. Signed-off-by:
Xiubo Li <xiubli@redhat.com> Signed-off-by:
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Mike Christie authored
Instead of doing strdup and kstrto* just use match_int for dev params. It will be ok to use int instead of unsigned long in tcmu_set_dev_attrib because that is only being used for max sectors and block size and the supported values for them are well under the max possible integer value. Signed-off-by:
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Mike Christie authored
This patch prevents a bug where data_bitmap is allocated in tcmu_configure_device, userspace changes the max_blocks setting, the device is mapped to a LUN, then we try to access the data_bitmap based on the new max_blocks limit which may now be out of range. To prevent this, we just check if data_bitmap has been setup. If it has then we fail the max_blocks update operation. Signed-off-by:
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Mike Christie authored
The tcmu dev is added to the list of tcmu devices during configuration. At this time the tcmu setup has completed, but lio core has not completed its setup. The device is not yet usable so do not try to unmap blocks from it Signed-off-by:
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Mike Christie authored
Do not allow userspace to block or reset the ring until the device has been configured. This will prevent the bug where userspace can write to those files and access mb_addr before it has been setup. Signed-off-by:
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Mike Christie authored
Use the lio core helper to check if the device is configured. Signed-off-by:
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Mike Christie authored
This just adds a helper function to check if a device is configured and it converts the target users to use it. The next patch will add a backend module user so those types of modules do not have to know the lio core details. Signed-off-by:
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Mike Christie authored
Use INIT_LIST_HEAD to initialize node list head. Signed-off-by:
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Mike Christie authored
The caller of queue_cmd_ring grabs and releases the lock, so the tcmu_setup_cmd_timer failure handling inside queue_cmd_ring should not call mutex_unlock. Signed-off-by:
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Bart Van Assche authored
This patch avoids that building with W=1 causes the compiler to complain about fall-through. Signed-off-by:
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Bart Van Assche authored
This patch avoids that sparse reports the following: drivers/scsi/libiscsi.c:1844:23: warning: context imbalance in 'iscsi_exec_task_mgmt_fn' - unexpected unlock Signed-off-by:
Lee Duncan <lduncan@suse.com> Signed-off-by:
Chris Leech <cleech@redhat.com> Signed-off-by:
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Douglas Gilbert authored
This patch is motivated by a response in the thread: Re: [PATCH 0/5]stop normal completion path entering a timeout req by Jianchao Wang . It generalizes the error injection of blk_abort_request() to use scsi_debug's "every_nth" mechanism. Ref with original patch to scsi_debug: https://lore.kernel.org/lkml/a68ad043-26a1-d3d8-2009-504ba4230e0f@oracle.com/ Also convert two vmalloc/memset(0) to vzalloc() calls. Signed-off-by:
Douglas Gilbert <dgilbert@interlog.com> Reviewed-by:
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Anton Vasilyev authored
tw_probe() returns 0 in case of fail of tw_initialize_device_extension(), pci_resource_start() or tw_reset_sequence() and releases resources. twl_probe() returns 0 in case of fail of twl_initialize_device_extension(), pci_iomap() and twl_reset_sequence(). twa_probe() returns 0 in case of fail of tw_initialize_device_extension(), ioremap() and twa_reset_sequence(). The patch adds retval initialization for these cases. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Anton Vasilyev <vasilyev@ispras.ru> Acked-by:
Adam Radford <aradford@gmail.com> Signed-off-by:
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Jia-Ju Bai authored
tscam(), atp870_init(), atp880_init() and atp885_init() are never called in atomic context. They call mdelay() to busily wait, which is not necessary. mdelay() can be replaced with msleep(). This is found by a static analysis tool named DCNS written by myself. Signed-off-by:
Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by:
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Jia-Ju Bai authored
wait_chip_ready() and wait_firmware_ready() are never called in atomic context. They call mdelay() to busy wait which is not necessary. mdelay() can be replaced with msleep(). This is found by a static analysis tool named DCNS written by myself. Signed-off-by:
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Jia-Ju Bai authored
mpt_attach() and mptfc_probe() are never called in atomic context. They call kzalloc() and kcalloc() with GFP_ATOMIC, which is not necessary. GFP_ATOMIC can be replaced with GFP_KERNEL. This is found by a static analysis tool named DCNS written by myself. Signed-off-by:
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Colin Ian King authored
The null checks on nvmebuf are redundant as nvmebuf is always obtained from a container_of() and hence can never be null. Remove all the redundant null checks. This also cleans up a static analysis warning. Detected by CoverityScan, CID#1471753 ("Dereference before null check") Signed-off-by:Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Dominique Martinet authored
Generated by scripts/coccinelle/misc/strncpy_truncation.cocci Signed-off-by:
Dominique Martinet <asmadeus@codewreck.org> Signed-off-by:
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Dominique Martinet authored
Generated by scripts/coccinelle/misc/strncpy_truncation.cocci Signed-off-by:
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- 20 Jul, 2018 14 commits
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Xiang Chen authored
Add a check ERR bit of status to decide whether there is something wrong with initial register-D2H FIS. If error exist, PHY link reset the channel to restart OOB. Directly call work HISI_PHYE_LINK_RESET replacing disable_phy_vx_hw() and enable_phy_vx_hw(). Signed-off-by:
Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by:
John Garry <john.garry@huawei.com> Signed-off-by:
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Xiaofei Tan authored
In task start delivery function, we need to add a memory barrier to prevent re-ordering of reading memory by hardware. Because the slot data is set in task prepare function and it could be running in another CPU. This patch adds an memory barrier after s->ready is read in the task start delivery function, and uses WRITE_ONCE() in the places where s->ready is set to ensure that the compiler does not re-order. Signed-off-by:
Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by:
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Xiang Chen authored
To decrease the usage of spinlock during delivery IO, relocate some code in hisi_sas_task_prep(). Also an invalid comment is removed. Signed-off-by:
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Xiaofei Tan authored
This patch implements handlers of PCIe FLR for v3 hw, reset_prepare() and reset_done(). User can issue FLR through sysfs interface, as v3 hw support PCIe FLR. Then if we don't implement these two handlers, our SAS controller will not work after executing FLR. Signed-off-by:
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Xiaofei Tan authored
Much code of PM suspend function also exists in soft reset function. This is not concise. So, this patch relocates the common code of these two functions to a separate function. Signed-off-by:
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Xiaofei Tan authored
This patch tidies host controller reset function by putting some code to two new functions, and exports these two functions out, so that they could be used by FLR feature to be realised. Signed-off-by:
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Xiaofei Tan authored
There is an issue that link reset can't recover PHY when STP link timeout. Because current process of enabling PHY for v3 hw will wait last transmission done. The time of one transmission depends IO size, disk model and so on. Normally, it should be shorter than 50ms. But the last transmission could be never done for some abnormal scenarios, such as STP link timeout. This patch is to fix the issue. Check PHY status after starting process of enabling PHY for 50ms. If the PHY is still active, we disable it forcibly by PHY reset. Of course, we need to clear the PHY reset bit when enable PHY. Besides, the function disable_phy_v3_hw() should not be suitable to call in interrupts for hilink bug for this 50ms delay. Then, we do link reset for hilink bug directly. The change is that we don't clear the invalid dword count register. This is better. Because we should not clear such error count while not saved. Signed-off-by:
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Xiaofei Tan authored
The ISR of channel interrupt of v3 hw is a little long and messy. This patch tidies it by relocating CHL_INT1 and CHL_INT2 handling to new function separately. Signed-off-by:
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John Garry authored
For some time now we have not used hisi_sas_slot_abort() to handle erroring slots, apart from in archaic v1 hw. As such, remove this function and associated code. For v1 hw, move error handling to same scheme as other hw revisions, where we allow erroring commands to timeout. Signed-off-by:
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Varun Prakash authored
T5/T6 can have different pack and pad boundary value. This patch sets packing boundary based on cache line size and PCI-E maximum payload size and sets smallest padding boundary value. Signed-off-by:
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liwei authored
Signed-off-by:
Li Wei <liwei213@huawei.com> Signed-off-by:
Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by:
Guodong Xu <guodong.xu@linaro.org> Tested-by:
John Stultz <john.stultz@linaro.org> Signed-off-by:
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liwei authored
arm64: dts: add ufs node for Hisilicon. Signed-off-by:
Rob Herring <robh@kernel.org> Tested-by:
Wei Xu <xuwei5@hisilicon.com> Signed-off-by:
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liwei authored
add ufs node document for Hisilicon. Signed-off-by:
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liwei authored
add Hisilicon ufs driver code. Signed-off-by:
Geng Jianfeng <gengjianfeng@hisilicon.com> Signed-off-by:
Zang Leigang <zangleigang@hisilicon.com> Signed-off-by:
Yu Jianfeng <steven.yujianfeng@hisilicon.com> Tested-by:
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- 13 Jul, 2018 5 commits
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Douglas Gilbert authored
A test program's runtime became impractically long since any non zero ndelay (e.g. 1 nanosec) caused Start Stop Unit to delay over 8 magnitudes greater than other commands. This patch skips long delays (on Start Stop Unit and Synchronize Cache) if ndelay is less than or equal to 10 microsecs. Signed-off-by:
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Arnd Bergmann authored
We don't want to use 'struct timespec' because of the y2038 overflow problem. The overflow is not actually an issue here, but it's easy to replace with 'timespec64' for consistency. However, it's worth pointing out that nanosecond values have nine digits, not eight or ten, so I'm fixing the format strings accordingly as well. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Hannes Reinecke authored
When calling either fc_rport_logon() or fc_rport_logoff() during rport list traversal we cannot use the RCU list traversal, as either of these functions will be taking a mutex. So we need to partially revert commit a407c593 to take the disc mutex during traversal. We should, however, continue to use krefs to ensure that the rport object will not be freed from under us. Fixes: a407c593 ("scsi: libfc: Fixup disc_mutex handling") Signed-off-by:
Hannes Reinecke <hare@suse.com> Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
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Hannes Reinecke authored
The discovery rport list handling is quite odd; the list traversal is independent from the lifetime of the rport itself. This makes auditing quite tricky, and the chance remains that we've missed something. So this patch adds a WARN_ON() statement when freeing an rport which is still part of a list. Signed-off-by:
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Hannes Reinecke authored
fc_disc_stop_rports() is calling fc_rport_logoff(), which in turn is acquiring the rport mutex. So we cannot use RCU list traversal here, but rather need to hold the disc mutex to avoid list corruption while traversing. Fixes: a407c593 ("scsi: libfc: Fixup disc_mutex handling") Signed-off-by:
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