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spi: pl022: Don't touch unspecified bits in interrupt mask 

PL022 Programmers model explicitely states "do not modify undefined register
bits". Correct the "all enable" interrupt mask so that it only enables defined
ones.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Alexander Sverdlin 2015-02-27 16:30:07 +01:00 committed by Mark Brown
parent 45b064d73d
commit 85fa4e1f09
1 changed files with 6 additions and 1 deletions
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7
drivers/spi/spi-pl022.c
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@ -285,7 +285,12 @@
*/
#define DEFAULT_SSP_REG_IMSC 0x0UL
#define DISABLE_ALL_INTERRUPTS DEFAULT_SSP_REG_IMSC
#define ENABLE_ALL_INTERRUPTS (~DEFAULT_SSP_REG_IMSC)
#define ENABLE_ALL_INTERRUPTS ( \
SSP_IMSC_MASK_RORIM | \
SSP_IMSC_MASK_RTIM | \
SSP_IMSC_MASK_RXIM | \
SSP_IMSC_MASK_TXIM \
)
#define CLEAR_ALL_INTERRUPTS 0x3