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dmaengine: idxd: reconfig device after device reset command

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[ Upstream commit e530a9f3db ]

Device reset clears the MSIXPERM table and the device registers. Re-program
the MSIXPERM table and re-enable the error interrupts post reset.

Fixes: 745e92a6d8 ("dmaengine: idxd: idxd: move remove() bits for idxd 'struct device' to device.c")
Reported-by: Sanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/163054188513.2853562.12077053294595278181.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dave Jiang 2021-09-01 17:18:05 -07:00 • committed by Justin Hammond
parent 208ac74d0f
commit c4fa41c314
1 changed files with 2 additions and 0 deletions
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2
drivers/dma/idxd/device.c
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@ -583,6 +583,8 @@ void idxd_device_reset(struct idxd_device *idxd)
spin_lock(&idxd->dev_lock);
idxd_device_clear_state(idxd);
idxd->state = IDXD_DEV_DISABLED;
idxd_unmask_error_interrupts(idxd);
idxd_msix_perm_setup(idxd);
spin_unlock(&idxd->dev_lock);
}