> -----Original Message----- > From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb- > owner@xxxxxxxxxxxxxxx] On Behalf Of Chris Ruehl > Sent: Friday, November 29, 2013 3:20 PM > To: alexander.shishkin@xxxxxxxxxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx > Cc: linux-usb@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Chris Ruehl > Subject: [PATCH 1/3 v2] usb: chipidea: Reallocate regmap only if lpm is > detected > > 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@xxxxxxxxxxxx> > --- > 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); > -- Acked-by: Peter Chen <peter.chen@xxxxxxxxxxxxx> Peter -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
