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0e517d0d7f
commit eb7f8e28420372787933eec079735c35034bda7d 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> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.