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| author | Nirmal Patel <nirmal.patel@linux.intel.com> | 2023-02-24 13:28:11 -0700 |
|---|---|---|
| committer | Lorenzo Pieralisi <lpieralisi@kernel.org> | 2023-05-08 09:17:13 +0200 |
| commit | b61cf04c49c3dfa70a0d6725d3eb40bf9b35cf71 (patch) | |
| tree | d3c229eed778eef680d6eab27812421cd6782375 /lib/test-string_helpers.c | |
| parent | ac9a78681b921877518763ba0e89202254349d1b (diff) | |
PCI: vmd: Reset VMD config register between soft reboots
VMD driver can disable or enable MSI remapping by changing
VMCONFIG_MSI_REMAP register. This register needs to be set to the
default value during soft reboots. Drives failed to enumerate
when Windows boots after performing a soft reboot from Linux.
Windows doesn't support MSI remapping disable feature and stale
register value hinders Windows VMD driver initialization process.
Adding vmd_shutdown function to make sure to set the VMCONFIG
register to the default value.
Link: https://lore.kernel.org/r/20230224202811.644370-1-nirmal.patel@linux.intel.com
Fixes: ee81ee84f873 ("PCI: vmd: Disable MSI-X remapping when possible")
Signed-off-by: Nirmal Patel <nirmal.patel@linux.intel.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Jon Derrick <jonathan.derrick@linux.dev>
Diffstat (limited to 'lib/test-string_helpers.c')
0 files changed, 0 insertions, 0 deletions