diff options
| author | Oliver Neukum <oneukum@suse.com> | 2022-05-12 13:38:46 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-06-20 10:30:32 +0100 |
| commit | b3f820b905c931a969d7d7cfb30f1ab1b071c425 (patch) | |
| tree | 057a3617b07e89433548886e531c1d4231fad6bb | |
| parent | 5b044a130017ad164f118b799321b7446e4c638c (diff) | |
media: igorplugusb: respect DMA coherency
The coherency rules mean that you cannot embed
a buffer inside a descriptor. kmalloc() separately.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
| -rw-r--r-- | drivers/media/rc/igorplugusb.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/media/rc/igorplugusb.c b/drivers/media/rc/igorplugusb.c index b40dbf500186..b46362da8623 100644 --- a/drivers/media/rc/igorplugusb.c +++ b/drivers/media/rc/igorplugusb.c @@ -38,7 +38,7 @@ struct igorplugusb { struct timer_list timer; - uint8_t buf_in[MAX_PACKET]; + u8 *buf_in; char phys[64]; }; @@ -177,6 +177,9 @@ static int igorplugusb_probe(struct usb_interface *intf, if (!ir->urb) goto fail; + ir->buf_in = kmalloc(MAX_PACKET, GFP_KERNEL); + if (!ir->buf_in) + goto fail; usb_fill_control_urb(ir->urb, udev, usb_rcvctrlpipe(udev, 0), (uint8_t *)&ir->request, ir->buf_in, sizeof(ir->buf_in), igorplugusb_callback, ir); @@ -223,6 +226,7 @@ fail: rc_free_device(ir->rc); usb_free_urb(ir->urb); del_timer(&ir->timer); + kfree(ir->buf_in); return ret; } @@ -236,6 +240,7 @@ static void igorplugusb_disconnect(struct usb_interface *intf) usb_set_intfdata(intf, NULL); usb_kill_urb(ir->urb); usb_free_urb(ir->urb); + kfree(ir->buf_in); } static const struct usb_device_id igorplugusb_table[] = { |