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author | Archana Patni <archana.patni@intel.com> | 2025-07-23 19:58:49 +0300 |
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committer | Martin K. Petersen <martin.petersen@oracle.com> | 2025-07-24 22:37:29 -0400 |
commit | 4428ddea832cfdb63e476eb2e5c8feb5d36057fe (patch) | |
tree | d7c47c662d729317c249eddbb2697c63712923be /rust/helpers/signal.c | |
parent | 19272b37aa4f83ca52bdf9c16d5d81bdd1354494 (diff) |
scsi: ufs: ufs-pci: Fix hibernate state transition for Intel MTL-like host controllers
UFSHCD core disables the UIC completion interrupt when issuing UIC
hibernation commands, and re-enables it afterwards if it was enabled to
start with, refer ufshcd_uic_pwr_ctrl(). For Intel MTL-like host
controllers, accessing the register to re-enable the interrupt disrupts
the state transition.
Use hibern8_notify variant operation to disable the interrupt during the
entire hibernation, thereby preventing the disruption.
Fixes: 4049f7acef3e ("scsi: ufs: ufs-pci: Add support for Intel MTL")
Cc: stable@vger.kernel.org
Signed-off-by: Archana Patni <archana.patni@intel.com>
Link: https://lore.kernel.org/r/20250723165856.145750-2-adrian.hunter@intel.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'rust/helpers/signal.c')
0 files changed, 0 insertions, 0 deletions