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misc: rtsx_usb: fix use of dma mapped buffer for usb bulk transfer
commit eb7f8e2842
upstream.
rtsx_usb driver allocates coherent dma buffer for urb transfers.
This buffer is passed to usb_bulk_msg() and usb core tries to
map already mapped buffer running into a dma mapping error.
xhci_hcd 0000:01:00.0: rejecting DMA map of vmalloc memory
WARNING: CPU: 1 PID: 279 at include/linux/dma-mapping.h:326 usb_ hcd_map_urb_for_dma+0x7d6/0x820
...
xhci_map_urb_for_dma+0x291/0x4e0
usb_hcd_submit_urb+0x199/0x12b0
...
usb_submit_urb+0x3b8/0x9e0
usb_start_wait_urb+0xe3/0x2d0
usb_bulk_msg+0x115/0x240
rtsx_usb_transfer_data+0x185/0x1a8 [rtsx_usb]
rtsx_usb_send_cmd+0xbb/0x123 [rtsx_usb]
rtsx_usb_write_register+0x12c/0x143 [rtsx_usb]
rtsx_usb_probe+0x226/0x4b2 [rtsx_usb]
Fix it to use kmalloc() to get DMA-able memory region instead.
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/667d627d502e1ba9ff4f9b94966df3299d2d3c0d.1656642167.git.skhan@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
86884017bb
commit
af7d9d4abe
2 changed files with 7 additions and 7 deletions
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@ -631,8 +631,7 @@ static int rtsx_usb_probe(struct usb_interface *intf,
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ucr->pusb_dev = usb_dev;
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ucr->iobuf = usb_alloc_coherent(ucr->pusb_dev, IOBUF_SIZE,
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GFP_KERNEL, &ucr->iobuf_dma);
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ucr->iobuf = kmalloc(IOBUF_SIZE, GFP_KERNEL);
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if (!ucr->iobuf)
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return -ENOMEM;
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@ -668,8 +667,9 @@ static int rtsx_usb_probe(struct usb_interface *intf,
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out_init_fail:
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usb_set_intfdata(ucr->pusb_intf, NULL);
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usb_free_coherent(ucr->pusb_dev, IOBUF_SIZE, ucr->iobuf,
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ucr->iobuf_dma);
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kfree(ucr->iobuf);
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ucr->iobuf = NULL;
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ucr->cmd_buf = ucr->rsp_buf = NULL;
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return ret;
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}
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@ -682,8 +682,9 @@ static void rtsx_usb_disconnect(struct usb_interface *intf)
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mfd_remove_devices(&intf->dev);
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usb_set_intfdata(ucr->pusb_intf, NULL);
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usb_free_coherent(ucr->pusb_dev, IOBUF_SIZE, ucr->iobuf,
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ucr->iobuf_dma);
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kfree(ucr->iobuf);
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ucr->iobuf = NULL;
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ucr->cmd_buf = ucr->rsp_buf = NULL;
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}
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#ifdef CONFIG_PM
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@ -55,7 +55,6 @@ struct rtsx_ucr {
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struct usb_interface *pusb_intf;
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struct usb_sg_request current_sg;
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unsigned char *iobuf;
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dma_addr_t iobuf_dma;
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struct timer_list sg_timer;
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struct mutex dev_mutex;
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