mei: gsc: use polling instead of interrupts

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A work-around for a HW issue in XEHPSDV that manifests itself when SW reads
a gsc register when gsc is sending an interrupt. The work-around is
to disable interrupts and to use polling instead.

Cc: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Vitaly Lubart <vitaly.lubart@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-7-tomas.winkler@intel.com
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

...

This commit is contained in:

Tomas Winkler 2022-09-08 00:51:03 +03:00 • committed by Joonas Lahtinen

parent 2d427248aa

commit 5b063995de

3 changed files with 128 additions and 15 deletions

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48

drivers/misc/mei/gsc-me.c

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80

drivers/misc/mei/hw-me.c

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15

drivers/misc/mei/hw-me.h

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