This is a note to let you know that I've just added the patch titled
media: dvb: i2c transfers over usb cannot be done from stack
to the 4.4-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:
media-dvb-i2c-transfers-over-usb-cannot-be-done-from-stack.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6d33377f2abbf9f0e561b116dd468d1c3ff36a6a Mon Sep 17 00:00:00 2001
From: Laurent Caumont <lcaumont2@xxxxxxxxx>
Date: Sat, 11 Nov 2017 12:44:46 -0500
Subject: media: dvb: i2c transfers over usb cannot be done from stack
From: Laurent Caumont <lcaumont2@xxxxxxxxx>
commit 6d33377f2abbf9f0e561b116dd468d1c3ff36a6a upstream.
Signed-off-by: Laurent Caumont <lcaumont2@xxxxxxxxx>
Signed-off-by: Sean Young <sean@xxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/usb/dvb-usb/dibusb-common.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
--- a/drivers/media/usb/dvb-usb/dibusb-common.c
+++ b/drivers/media/usb/dvb-usb/dibusb-common.c
@@ -179,8 +179,20 @@ EXPORT_SYMBOL(dibusb_i2c_algo);
int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val)
{
- u8 wbuf[1] = { offs };
- return dibusb_i2c_msg(d, 0x50, wbuf, 1, val, 1);
+ u8 *buf;
+ int rc;
+
+ buf = kmalloc(2, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ buf[0] = offs;
+
+ rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1);
+ *val = buf[1];
+ kfree(buf);
+
+ return rc;
}
EXPORT_SYMBOL(dibusb_read_eeprom_byte);
Patches currently in stable-queue which might be from lcaumont2@xxxxxxxxx are
queue-4.4/media-dvb-i2c-transfers-over-usb-cannot-be-done-from-stack.patch