From: Jonas Gorski jonas.gorski@gmail.com
commit 6722e46513e0af8e2fff4698f7cb78bc50a9f13f upstream.
The IXP4XX_EXP_T1_MASK was shifted one bit to the right, overlapping IXP4XX_EXP_T2_MASK and leaving bit 29 unused. The offset being wrong is also confirmed at least by the datasheet of IXP45X/46X [1].
Fix this by aligning it to IXP4XX_EXP_T1_SHIFT.
[1] https://www.intel.com/content/dam/www/public/us/en/documents/manuals/ixp45x-...
Cc: stable@vger.kernel.org Fixes: 1c953bda90ca ("bus: ixp4xx: Add a driver for IXP4xx expansion bus") Signed-off-by: Jonas Gorski jonas.gorski@gmail.com Link: https://lore.kernel.org/r/20230624112958.27727-1-jonas.gorski@gmail.com Signed-off-by: Linus Walleij linus.walleij@linaro.org Link: https://lore.kernel.org/r/20230624122139.3229642-1-linus.walleij@linaro.org Signed-off-by: Arnd Bergmann arnd@arndb.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/bus/intel-ixp4xx-eb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/bus/intel-ixp4xx-eb.c +++ b/drivers/bus/intel-ixp4xx-eb.c @@ -33,7 +33,7 @@ #define IXP4XX_EXP_TIMING_STRIDE 0x04 #define IXP4XX_EXP_CS_EN BIT(31) #define IXP456_EXP_PAR_EN BIT(30) /* Only on IXP45x and IXP46x */ -#define IXP4XX_EXP_T1_MASK GENMASK(28, 27) +#define IXP4XX_EXP_T1_MASK GENMASK(29, 28) #define IXP4XX_EXP_T1_SHIFT 28 #define IXP4XX_EXP_T2_MASK GENMASK(27, 26) #define IXP4XX_EXP_T2_SHIFT 26