This is a note to let you know that I've just added the patch titled
clk: ti: dra7-atl-clock: Fix possible ERR_PTR dereference
to the 4.1-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:
clk-ti-dra7-atl-clock-fix-possible-err_ptr-dereference.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e0cdcda508f110b7ec190dc7c5eb2869ba73a535 Mon Sep 17 00:00:00 2001
From: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Date: Wed, 13 May 2015 15:54:40 +0900
Subject: clk: ti: dra7-atl-clock: Fix possible ERR_PTR dereference
From: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
commit e0cdcda508f110b7ec190dc7c5eb2869ba73a535 upstream.
of_clk_get_from_provider() returns ERR_PTR on failure. The
dra7-atl-clock driver was not checking its return value and
immediately used it in __clk_get_hw(). __clk_get_hw()
dereferences supplied clock, if it is not NULL, so in that case
it would dereference an ERR_PTR.
Fixes: 9ac33b0ce81f ("CLK: TI: Driver for DRA7 ATL (Audio Tracking Logic)")
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/clk/ti/clk-dra7-atl.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/clk/ti/clk-dra7-atl.c
+++ b/drivers/clk/ti/clk-dra7-atl.c
@@ -252,6 +252,11 @@ static int of_dra7_atl_clk_probe(struct
}
clk = of_clk_get_from_provider(&clkspec);
+ if (IS_ERR(clk)) {
+ pr_err("%s: failed to get atl clock %d from provider\n",
+ __func__, i);
+ return PTR_ERR(clk);
+ }
cdesc = to_atl_desc(__clk_get_hw(clk));
cdesc->cinfo = cinfo;
Patches currently in stable-queue which might be from k.kozlowski@xxxxxxxxxxx are
queue-4.1/clk-ti-dra7-atl-clock-fix-possible-err_ptr-dereference.patch
queue-4.1/clocksource-exynos_mct-avoid-blocking-calls-in-the-cpu-hotplug-notifier.patch
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