diff options
| author | Chris Ruehl <chris.ruehl@gtsys.com.hk> | 2013-12-06 16:35:12 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@freescale.com> | 2014-01-16 16:56:45 +0800 |
| commit | e8504b498e8ef6eb577b15db423e2a13af9085ba (patch) | |
| tree | ad937921b8a1d4f960eb84b1091a4c9478a7d5ac /drivers | |
| parent | d440d1f97857d914bb90d19fe9896bbca303e011 (diff) | |
usb: chipidea: Reallocate regmap only if lpm is detected
The regmap only needs to reallocate if the hw_read on the CAP register shows
lpm is used. Therefore the if() statement check the change.
Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 57fadc36d11a1263b446ef6f5d474d529274faa8)
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/chipidea/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 5ef0a15605e0..fb38df9356d4 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -213,7 +213,8 @@ static int hw_device_init(struct ci_hdrc *ci, void __iomem *base) reg = hw_read(ci, CAP_HCCPARAMS, HCCPARAMS_LEN) >> __ffs(HCCPARAMS_LEN); ci->hw_bank.lpm = reg; - hw_alloc_regmap(ci, !!reg); + if (reg) + hw_alloc_regmap(ci, !!reg); ci->hw_bank.size = ci->hw_bank.op - ci->hw_bank.abs; ci->hw_bank.size += OP_LAST; ci->hw_bank.size /= sizeof(u32); |