On 6/20/19 3:36 PM, Ard Biesheuvel wrote:
In the new SPI ACPI slave enumeration code, we use the value of
lookup.max_speed_khz as a flag to decide whether a match occurred.
However, doing so only makes sense if we initialize its value to
zero beforehand, or otherwise, random junk from the stack will
cause spurious matches.
So zero initialize the lookup struct fully, and only set the non-zero
members explicitly.
Fixes: 4c3c59544f33 ("spi/acpi: enumerate all SPI slaves in the namespace")
Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Cc: andy.shevchenko@xxxxxxxxx
Cc: masahisa.kojima@xxxxxxxxxx
Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
Cc: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>
Cc: linux-acpi@xxxxxxxxxxxxxxx
Cc: Lukas Wunner <lukas@xxxxxxxxx>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
---
drivers/spi/spi.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
Tested-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>
