This is a note to let you know that I've just added the patch titled
drm/i915: Fix CSR MMIO address check
to the 4.2-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:
drm-i915-fix-csr-mmio-address-check.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 982b0b2dd590c00f089fc6fe915bd0cb302a7f5c Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@xxxxxxx>
Date: Wed, 9 Sep 2015 16:52:09 +0200
Subject: drm/i915: Fix CSR MMIO address check
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From: Takashi Iwai <tiwai@xxxxxxx>
commit 982b0b2dd590c00f089fc6fe915bd0cb302a7f5c upstream.
Fix a wrong logical AND (&&) used for the range check of CSR MMIO.
Spotted nicely by gcc -Wlogical-op flag:
drivers/gpu/drm/i915/intel_csr.c: In function ‘finish_csr_load’:
drivers/gpu/drm/i915/intel_csr.c:353:41: warning: logical ‘and’ of mutually exclusive tests is always false [-Wlogical-op]
Fixes: eb805623d8b1 ('drm/i915/skl: Add support to load SKL CSR firmware.')
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Reviewed-by: Animesh Manna <animesh.manna@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_csr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/intel_csr.c
+++ b/drivers/gpu/drm/i915/intel_csr.c
@@ -350,7 +350,7 @@ static void finish_csr_load(const struct
}
csr->mmio_count = dmc_header->mmio_count;
for (i = 0; i < dmc_header->mmio_count; i++) {
- if (dmc_header->mmioaddr[i] < CSR_MMIO_START_RANGE &&
+ if (dmc_header->mmioaddr[i] < CSR_MMIO_START_RANGE ||
dmc_header->mmioaddr[i] > CSR_MMIO_END_RANGE) {
DRM_ERROR(" Firmware has wrong mmio address 0x%x\n",
dmc_header->mmioaddr[i]);
Patches currently in stable-queue which might be from tiwai@xxxxxxx are
queue-4.2/drm-i915-fix-csr-mmio-address-check.patch
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