This is a note to let you know that I've just added the patch titled
bus: ixp4xx: fix IXP4XX_EXP_T1_MASK
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bus-ixp4xx-fix-ixp4xx_exp_t1_mask.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6722e46513e0af8e2fff4698f7cb78bc50a9f13f Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@xxxxxxxxx>
Date: Sat, 24 Jun 2023 14:21:39 +0200
Subject: bus: ixp4xx: fix IXP4XX_EXP_T1_MASK
From: Jonas Gorski <jonas.gorski@xxxxxxxxx>
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-ixp46x-developers-manual.pdf
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 1c953bda90ca ("bus: ixp4xx: Add a driver for IXP4xx expansion bus")
Signed-off-by: Jonas Gorski <jonas.gorski@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230624112958.27727-1-jonas.gorski@xxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230624122139.3229642-1-linus.walleij@xxxxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/bus/intel-ixp4xx-eb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/bus/intel-ixp4xx-eb.c b/drivers/bus/intel-ixp4xx-eb.c
index f5ba6bee6fd8..320cf307db05 100644
--- 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
--
2.41.0
Patches currently in stable-queue which might be from jonas.gorski@xxxxxxxxx are
queue-5.15/bus-ixp4xx-fix-ixp4xx_exp_t1_mask.patch
queue-5.15/spi-bcm-qspi-return-error-if-neither-hif_mspi-nor-ms.patch
