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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2018-07-18 18:24:27 +0000
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2018-07-25 19:04:18 +0000
commitc8783d3930338323bd65f8043a8fd5ea22026824 (patch)
treefe9dd8d7df209960656749f27ec5cd62a2206445 /drivers/input
parentce55f75f039479fc67ab978560067717fa26e1c8 (diff)
downloadlinux-c8783d3930338323bd65f8043a8fd5ea22026824.tar.bz2
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 <marcus.folkesson@gmail.com> Tested-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/joystick/pxrc.c35
1 files changed, 17 insertions, 18 deletions
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;