[3.19.y-ckt stable] Patch "[media] af9013: Don't accept invalid bandwidth" has been added to staging queue
Kamal Mostafa
kamal at canonical.com
Thu Jul 16 00:59:43 UTC 2015
This is a note to let you know that I have just added a patch titled
[media] af9013: Don't accept invalid bandwidth
to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue
This patch is scheduled to be released in version 3.19.y-ckt4.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
------
>From 3ea530ec9c9fdf74dd082dff2bf0a5c956605848 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab at osg.samsung.com>
Date: Tue, 28 Apr 2015 19:02:19 -0300
Subject: [media] af9013: Don't accept invalid bandwidth
commit d7b76c91f471413de9ded837bddeca2164786571 upstream.
If userspace sends an invalid bandwidth, it should either return
EINVAL or switch to auto mode.
This driver will go past an array and program the hardware on a
wrong way if this happens.
Signed-off-by: Mauro Carvalho Chehab <mchehab at osg.samsung.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
drivers/media/dvb-frontends/af9013.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/media/dvb-frontends/af9013.c b/drivers/media/dvb-frontends/af9013.c
index 8001690..ba6c8f6 100644
--- a/drivers/media/dvb-frontends/af9013.c
+++ b/drivers/media/dvb-frontends/af9013.c
@@ -605,6 +605,10 @@ static int af9013_set_frontend(struct dvb_frontend *fe)
}
}
+ /* Return an error if can't find bandwidth or the right clock */
+ if (i == ARRAY_SIZE(coeff_lut))
+ return -EINVAL;
+
ret = af9013_wr_regs(state, 0xae00, coeff_lut[i].val,
sizeof(coeff_lut[i].val));
}
--
1.9.1
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