From c8783d3930338323bd65f8043a8fd5ea22026824 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Wed, 18 Jul 2018 18:24:27 +0000 Subject: Input: pxrc - do not store unneeded data in driver structure There is no need to store data buffer size, pointer to the buffer, or endpoint address in pxrc structure, as they are either only needed during setup, or are available from elsewhere. Reviewed-by: Marcus Folkesson Tested-by: Marcus Folkesson Signed-off-by: Dmitry Torokhov --- drivers/input/joystick/pxrc.c | 35 +++++++++++++++++------------------ 1 file changed, 17 insertions(+), 18 deletions(-) (limited to 'drivers/input') diff --git a/drivers/input/joystick/pxrc.c b/drivers/input/joystick/pxrc.c index 327b5ef8515f..887a0df9d9a7 100644 --- a/drivers/input/joystick/pxrc.c +++ b/drivers/input/joystick/pxrc.c @@ -25,15 +25,13 @@ struct pxrc { struct urb *urb; struct mutex pm_mutex; bool is_open; - __u8 epaddr; char phys[64]; - unsigned char *data; - size_t bsize; }; static void pxrc_usb_irq(struct urb *urb) { struct pxrc *pxrc = urb->context; + u8 *data = urb->transfer_buffer; int error; switch (urb->status) { @@ -61,15 +59,15 @@ static void pxrc_usb_irq(struct urb *urb) } if (urb->actual_length == 8) { - input_report_abs(pxrc->input, ABS_X, pxrc->data[0]); - input_report_abs(pxrc->input, ABS_Y, pxrc->data[2]); - input_report_abs(pxrc->input, ABS_RX, pxrc->data[3]); - input_report_abs(pxrc->input, ABS_RY, pxrc->data[4]); - input_report_abs(pxrc->input, ABS_RUDDER, pxrc->data[5]); - input_report_abs(pxrc->input, ABS_THROTTLE, pxrc->data[6]); - input_report_abs(pxrc->input, ABS_MISC, pxrc->data[7]); - - input_report_key(pxrc->input, BTN_A, pxrc->data[1]); + input_report_abs(pxrc->input, ABS_X, data[0]); + input_report_abs(pxrc->input, ABS_Y, data[2]); + input_report_abs(pxrc->input, ABS_RX, data[3]); + input_report_abs(pxrc->input, ABS_RY, data[4]); + input_report_abs(pxrc->input, ABS_RUDDER, data[5]); + input_report_abs(pxrc->input, ABS_THROTTLE, data[6]); + input_report_abs(pxrc->input, ABS_MISC, data[7]); + + input_report_key(pxrc->input, BTN_A, data[1]); } exit: @@ -124,6 +122,8 @@ static int pxrc_usb_init(struct pxrc *pxrc) { struct usb_device *udev = interface_to_usbdev(pxrc->intf); struct usb_endpoint_descriptor *epirq; + size_t xfer_size; + void *xfer_buf; unsigned int pipe; int error; @@ -136,10 +136,9 @@ static int pxrc_usb_init(struct pxrc *pxrc) return error; } - pxrc->bsize = usb_endpoint_maxp(epirq); - pxrc->epaddr = epirq->bEndpointAddress; - pxrc->data = devm_kmalloc(&pxrc->intf->dev, pxrc->bsize, GFP_KERNEL); - if (!pxrc->data) + xfer_size = usb_endpoint_maxp(epirq); + xfer_buf = devm_kmalloc(&pxrc->intf->dev, xfer_size, GFP_KERNEL); + if (!xfer_buf) return -ENOMEM; usb_set_intfdata(pxrc->intf, pxrc); @@ -154,8 +153,8 @@ static int pxrc_usb_init(struct pxrc *pxrc) if (error) return error; - pipe = usb_rcvintpipe(udev, pxrc->epaddr), - usb_fill_int_urb(pxrc->urb, udev, pipe, pxrc->data, pxrc->bsize, + pipe = usb_rcvintpipe(udev, epirq->bEndpointAddress), + usb_fill_int_urb(pxrc->urb, udev, pipe, xfer_buf, xfer_size, pxrc_usb_irq, pxrc, 1); return 0; -- cgit v1.2.3