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authorYanjiang Jin <yanjiang.jin@hxt-semitech.com>2018-12-20 16:32:35 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-01-26 09:37:06 +0100
commit008b4a703b2c45137a60be6a96838e1485598aec (patch)
tree6e09ed1f269b275fa3ae51309706fffbdbfeab91
parentceecd0c696456068c2a0e1f0d3c32e5290d115ab (diff)
download96b-common-008b4a703b2c45137a60be6a96838e1485598aec.tar.gz
scsi: smartpqi: call pqi_free_interrupts() in pqi_shutdown()
[ Upstream commit e57b2945aa654e48f85a41e8917793c64ecb9de8 ] We must free all irqs during shutdown, else kexec's 2nd kernel would hang in pqi_wait_for_completion_io() as below: Call trace: pqi_wait_for_completion_io pqi_submit_raid_request_synchronous.constprop.78+0x23c/0x310 [smartpqi] pqi_configure_events+0xec/0x1f8 [smartpqi] pqi_ctrl_init+0x814/0xca0 [smartpqi] pqi_pci_probe+0x400/0x46c [smartpqi] local_pci_probe+0x48/0xb0 pci_device_probe+0x14c/0x1b0 really_probe+0x218/0x3fc driver_probe_device+0x70/0x140 __driver_attach+0x11c/0x134 bus_for_each_dev+0x70/0xc8 driver_attach+0x30/0x38 bus_add_driver+0x1f0/0x294 driver_register+0x74/0x12c __pci_register_driver+0x64/0x70 pqi_init+0xd0/0x10000 [smartpqi] do_one_initcall+0x60/0x1d8 do_init_module+0x64/0x1f8 load_module+0x10ec/0x1350 __se_sys_finit_module+0xd4/0x100 __arm64_sys_finit_module+0x28/0x34 el0_svc_handler+0x104/0x160 el0_svc+0x8/0xc This happens only in the following combinations: 1. smartpqi is built as module, not built-in; 2. We have a disk connected to smartpqi card; 3. Both kexec's 1st and 2nd kernels use this disk as Rootfs' mount point. Signed-off-by: Yanjiang Jin <yanjiang.jin@hxt-semitech.com> Acked-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
-rw-r--r--drivers/scsi/smartpqi/smartpqi_init.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index b662f58203ac..bc15999f1c7c 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -6703,6 +6703,7 @@ static void pqi_shutdown(struct pci_dev *pci_dev)
* storage.
*/
rc = pqi_flush_cache(ctrl_info, SHUTDOWN);
+ pqi_free_interrupts(ctrl_info);
pqi_reset(ctrl_info);
if (rc == 0)
return;