dmaengine: idxd: reconfig device after device reset command

mainline inclusion
from mainline-v5.16
commit e530a9f3
category: bugfix
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I596WO
CVE: NA

Intel-SIG: commit e530a9f3 dmaengine: idxd: reconfig device after device reset command.
Incremental backporting patches for DSA/IAA on Intel Xeon platform.

--------------------------------

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

Fixes: 745e92a6 ("dmaengine: idxd: idxd: move remove() bits for idxd 'struct device' to device.c")
Reported-by: NSanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: NDave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/163054188513.2853562.12077053294595278181.stgit@djiang5-desk3.ch.intel.comSigned-off-by: NVinod Koul <vkoul@kernel.org>
Signed-off-by: NXiaochen Shen <xiaochen.shen@intel.com>

drivers/dma/idxd/device.c

@@ -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);
 }