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drivers:usb: use get|put_unaligned_le16

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This patch use get|put_unaligned_le16 to access structure data
to avoid data abort on some ARM platforms.

Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Marek Vasut <marex@denx.de>
This commit is contained in:
Piotr Wilczek 2013-06-26 08:22:05 +02:00 committed by Marek Vasut
parent e7e75c70c5
commit 7f3cf4060f
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/gadget/f_mass_storage.c
View file

@ -577,9 +577,9 @@ static int fsg_setup(struct usb_function *f,
{ {
struct fsg_dev *fsg = fsg_from_func(f); struct fsg_dev *fsg = fsg_from_func(f);
struct usb_request *req = fsg->common->ep0req; struct usb_request *req = fsg->common->ep0req;
u16 w_index = le16_to_cpu(ctrl->wIndex); u16 w_index = get_unaligned_le16(&ctrl->wIndex);
u16 w_value = le16_to_cpu(ctrl->wValue); u16 w_value = get_unaligned_le16(&ctrl->wValue);
u16 w_length = le16_to_cpu(ctrl->wLength); u16 w_length = get_unaligned_le16(&ctrl->wLength);
if (!fsg_is_set(fsg->common)) if (!fsg_is_set(fsg->common))
return -EOPNOTSUPP; return -EOPNOTSUPP;
@ -617,7 +617,7 @@ static int fsg_setup(struct usb_function *f,
"unknown class-specific control req " "unknown class-specific control req "
"%02x.%02x v%04x i%04x l%u\n", "%02x.%02x v%04x i%04x l%u\n",
ctrl->bRequestType, ctrl->bRequest, ctrl->bRequestType, ctrl->bRequest,
le16_to_cpu(ctrl->wValue), w_index, w_length); get_unaligned_le16(&ctrl->wValue), w_index, w_length);
return -EOPNOTSUPP; return -EOPNOTSUPP;
} }