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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2012-10-30 19:52:23 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-10-31 15:20:40 +0200 |
| commit | b11e94d03726c5dbee0d9a841a025313504e90f4 (patch) | |
| tree | 1c0b0f9dd296ca4580ad87b5d041b4a832f83d5c /kernel/tsacct.c | |
| parent | 4b0de6f38362960460d3693f122c6abe6bb0704b (diff) | |
| download | kernel_goldelico_gta04-b11e94d03726c5dbee0d9a841a025313504e90f4.zip kernel_goldelico_gta04-b11e94d03726c5dbee0d9a841a025313504e90f4.tar.gz kernel_goldelico_gta04-b11e94d03726c5dbee0d9a841a025313504e90f4.tar.bz2 | |
usb: musb: read MUSB_POWER register only when required.
This is part of the workaround for AM35x advisory Advisory 1.1.20.
The advisory says that the IPSS bridge can't handle 8 & 16 bit read
access. An 8bit read access to MUSB_POWER results in an 32bit read
access which also reads INTRTX and therefore may lose interrupts.
This patch tries to minimize reads to MUSB_POWER and perform them only
when required.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'kernel/tsacct.c')
0 files changed, 0 insertions, 0 deletions