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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>
hifive-unleashed-5.1
Rafał Miłecki 2015-05-13 07:36:38 +02:00 committed by Kalle Valo
parent f673821864
commit c411ead995
1 changed files with 4 additions and 3 deletions
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7
drivers/ssb/driver_pcicore.c
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@ -359,12 +359,13 @@ static void ssb_pcicore_init_hostmode(struct ssb_pcicore *pc)
/*
* Accessing PCI config without a proper delay after devices reset (not
* GPIO reset) was causing reboots on WRT300N v1.0.
* GPIO reset) was causing reboots on WRT300N v1.0 (BCM4704).
* Tested delay 850 us lowered reboot chance to 50-80%, 1000 us fixed it
* completely. Flushing all writes was also tested but with no luck.
* The same problem was reported for WRT350N v1 (BCM4705), so we just
* sleep here unconditionally.
*/
if (pc->dev->bus->chip_id == 0x4704)
usleep_range(1000, 2000);
usleep_range(1000, 2000);
/* Enable PCI bridge BAR0 prefetch and burst */
val = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;