MPS field of DOEPCTL0 is read only.
Signed-off-by: Anton Tikhomirov <av.tikhomirov@xxxxxxxxxxx>
---
drivers/usb/gadget/s3c-hsotg.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index e3fe5fd..03de169 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -1696,10 +1696,12 @@ static void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg,
reg |= mpsval;
writel(reg, regs + S3C_DIEPCTL(ep));
- reg = readl(regs + S3C_DOEPCTL(ep));
- reg &= ~S3C_DxEPCTL_MPS_MASK;
- reg |= mpsval;
- writel(reg, regs + S3C_DOEPCTL(ep));
+ if (ep) {
+ reg = readl(regs + S3C_DOEPCTL(ep));
+ reg &= ~S3C_DxEPCTL_MPS_MASK;
+ reg |= mpsval;
+ writel(reg, regs + S3C_DOEPCTL(ep));
+ }
return;
--
1.7.1
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