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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
ssb: extend fix for PCI related silent reboots to all chipsets
Recent fix for BCM4704 reboots has to be extended as the same problem
affects Linksys WRT350N v1 (BCM4705).
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Reported-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
authored by
Rafał Miłecki
and committed by
Kalle Valo
c411ead9
f6738218
+4
-3
+4
-3
drivers/ssb/driver_pcicore.c
+4
-3
drivers/ssb/driver_pcicore.c
···
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/*
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* Accessing PCI config without a proper delay after devices reset (not
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* GPIO reset) was causing reboots on WRT300N v1.0.
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* GPIO reset) was causing reboots on WRT300N v1.0 (BCM4704).
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* Tested delay 850 us lowered reboot chance to 50-80%, 1000 us fixed it
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* completely. Flushing all writes was also tested but with no luck.
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* The same problem was reported for WRT350N v1 (BCM4705), so we just
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* sleep here unconditionally.
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*/
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if (pc->dev->bus->chip_id == 0x4704)
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usleep_range(1000, 2000);
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usleep_range(1000, 2000);
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/* Enable PCI bridge BAR0 prefetch and burst */
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val = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;