Messages in this thread Patch in this message | | | From | Chris Ruehl <> | Subject | [PATCH 1/3 v2] usb: chipidea: Reallocate regmap only if lpm is detected | Date | Fri, 29 Nov 2013 15:19:33 +0800 |
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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> --- drivers/usb/chipidea/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 5d8981c..5075407 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -208,7 +208,8 @@ 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); -- 1.7.10.4
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