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| author | Chris Ruehl <chris.ruehl@gtsys.com.hk> | 2013-12-06 12:35:12 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-09 06:02:54 +0400 |
| commit | aeb2c1210d71c00a4b59d343b0a7df6b1059eb89 (patch) | |
| tree | 785bd1dd7889fc3e0f28267614a497d5a3defc50 /drivers/usb/chipidea/core.c | |
| parent | 9058bdc3a8fbfe1a528019466df62635ef1f7a94 (diff) | |
| download | linux-aeb2c1210d71c00a4b59d343b0a7df6b1059eb89.tar.xz | |
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>
Diffstat (limited to 'drivers/usb/chipidea/core.c')
| -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 5d8981c5235e..50754073fae0 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); |