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Staging: at76_usb: cleanup dma on stack issues
- no DMA on stack - cleanup unclear endianness issue Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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6666446290
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0d1d142433
@ -590,18 +590,25 @@ static int at76_remap(struct usb_device *udev)
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static int at76_get_op_mode(struct usb_device *udev)
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{
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int ret;
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u8 op_mode;
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u8 saved;
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u8 *op_mode;
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op_mode = kmalloc(1, GFP_NOIO);
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if (!op_mode)
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return -ENOMEM;
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ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
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USB_TYPE_VENDOR | USB_DIR_IN |
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USB_RECIP_INTERFACE, 0x01, 0, &op_mode, 1,
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USB_CTRL_GET_TIMEOUT);
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saved = *op_mode;
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kfree(op_mode);
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if (ret < 0)
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return ret;
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else if (ret < 1)
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return -EIO;
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else
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return op_mode;
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return saved;
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}
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/* Load a block of the second ("external") part of the firmware */
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@ -714,17 +721,22 @@ static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
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/* Return positive number for status, negative for an error */
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static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
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{
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u8 stat_buf[40];
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u8 *stat_buf;
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int ret;
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stat_buf = kmalloc(40, GFP_NOIO);
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if (!stat_buf)
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return -ENOMEM;
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ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
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USB_TYPE_VENDOR | USB_DIR_IN |
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USB_RECIP_INTERFACE, cmd, 0, stat_buf,
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sizeof(stat_buf), USB_CTRL_GET_TIMEOUT);
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if (ret < 0)
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return ret;
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if (ret >= 0)
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ret = stat_buf[5];
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kfree(stat_buf);
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return stat_buf[5];
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return ret;
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}
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#define MAKE_CMD_CASE(c) case (c): return #c
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@ -745,7 +757,7 @@ static const char *at76_get_cmd_string(u8 cmd_status)
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return "UNKNOWN";
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}
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static int at76_set_card_command(struct usb_device *udev, int cmd, void *buf,
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static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
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int buf_size)
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{
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int ret;
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