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39 lines
1.3 KiB
Diff
39 lines
1.3 KiB
Diff
From: Hauke Mehrtens <hauke@hauke-m.de>
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Date: Wed, 5 Nov 2014 23:31:07 +0100
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Subject: [PATCH] b43: fix NULL pointer dereference in b43_phy_copy()
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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phy_read and phy_write are not set for every phy any more sine this:
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commit d342b95dd735014a590f9051b1ba227eb54ca8f6
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Author: Rafał Miłecki <zajec5@gmail.com>
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Date: Thu Jul 31 21:59:43 2014 +0200
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b43: don't duplicate common PHY read/write ops
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b43_phy_copy() accesses phy_read and phy_write directly and will fail
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with some phys. This patch fixes the regression by using the
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b43_phy_read() and b43_phy_write() functions which should be used for
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read and write access.
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This should fix this bug report:
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https://bugzilla.kernel.org/show_bug.cgi?id=87731
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Reported-by: Volker Kempter <v.kempter@pe.tu-clausthal.de>
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Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
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---
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--- a/drivers/net/wireless/b43/phy_common.c
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+++ b/drivers/net/wireless/b43/phy_common.c
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@@ -301,8 +301,7 @@ void b43_phy_write(struct b43_wldev *dev
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void b43_phy_copy(struct b43_wldev *dev, u16 destreg, u16 srcreg)
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{
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assert_mac_suspended(dev);
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- dev->phy.ops->phy_write(dev, destreg,
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- dev->phy.ops->phy_read(dev, srcreg));
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+ b43_phy_write(dev, destreg, b43_phy_read(dev, srcreg));
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}
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void b43_phy_mask(struct b43_wldev *dev, u16 offset, u16 mask)
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