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| author | Hauke Mehrtens <hauke@hauke-m.de> | 2014-11-08 15:59:42 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2014-11-10 21:10:24 +0300 |
| commit | 9c3a6670863033df421c8e46f79f383cf3a922ee (patch) | |
| tree | fb64958180a4f4d6593781eb699f6206cc84cd2e /drivers/net/wireless/b43 | |
| parent | d1cd5ba4ca8b41793f4e581dd1dbf46b7f2cf691 (diff) | |
| download | linux-9c3a6670863033df421c8e46f79f383cf3a922ee.tar.xz | |
b43: fix NULL pointer dereference in b43_phy_copy()
phy_read and phy_write are not set for every phy any more sine this:
commit d342b95dd735014a590f9051b1ba227eb54ca8f6
Author: Rafał Miłecki <zajec5@gmail.com>
Date: Thu Jul 31 21:59:43 2014 +0200
b43: don't duplicate common PHY read/write ops
b43_phy_copy() accesses phy_read and phy_write directly and will fail
with some phys. This patch fixes the regression by using the
b43_phy_read() and b43_phy_write() functions which should be used for
read and write access.
This should fix this bug report:
https://bugzilla.kernel.org/show_bug.cgi?id=87731
Reported-by: Volker Kempter <v.kempter@pe.tu-clausthal.de>
Tested-by: Volker Kempter <v.kempter@pe.tu-clausthal.de>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/b43')
| -rw-r--r-- | drivers/net/wireless/b43/phy_common.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/net/wireless/b43/phy_common.c b/drivers/net/wireless/b43/phy_common.c index 1dfc682a8055..ee27b06074e1 100644 --- a/drivers/net/wireless/b43/phy_common.c +++ b/drivers/net/wireless/b43/phy_common.c @@ -300,9 +300,7 @@ void b43_phy_write(struct b43_wldev *dev, u16 reg, u16 value) void b43_phy_copy(struct b43_wldev *dev, u16 destreg, u16 srcreg) { - assert_mac_suspended(dev); - dev->phy.ops->phy_write(dev, destreg, - dev->phy.ops->phy_read(dev, srcreg)); + b43_phy_write(dev, destreg, b43_phy_read(dev, srcreg)); } void b43_phy_mask(struct b43_wldev *dev, u16 offset, u16 mask) |