wifi: iwlwifi: fix the check for the SCRATCH register upon resume

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[ Upstream commit a17821321a ]

We can't rely on the SCRATCH register being 0 on platform that power
gate the NIC in S3. Even in those platforms, the SCRATCH register is
still returning 0x1010000.

Make sure that we understand that those platforms have powered off the
device.

Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219597
Fixes: cb347bd29d ("wifi: iwlwifi: mvm: fix hibernation")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250420095642.a7e082ee785c.I9418d76f860f54261cfa89e1f7ac10300904ba40@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Emmanuel Grumbach 2025-04-20 10:00:01 +03:00 • committed by Greg Kroah-Hartman

parent 33bf992088

commit 50d1982dba

2 changed files with 5 additions and 2 deletions

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1

drivers/net/wireless/intel/iwlwifi/iwl-csr.h

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6

drivers/net/wireless/intel/iwlwifi/pcie/drv.c

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