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(parent: b9b1eae) | patch
usb: cdns3: Optimize DMA request buffer allocation
authorSanket Parmar <sparmar@cadence.com>
Mon, 22 Mar 2021 10:26:30 +0000 (11:26 +0100)
committerPeter Chen <peter.chen@kernel.org>
Mon, 12 Apr 2021 12:19:22 +0000 (20:19 +0800)
commit8430e98f2c877e2034e5a5adaa6bf0b4a3041e1d
tree0ec0f483c7e0f20b07da649264047c6596462877tree | snapshot
parentb9b1eae761eeae665824ca6ef7f91da4fc798ebbcommit | diff
usb: cdns3: Optimize DMA request buffer allocation

dma_alloc_coherent() might fail on the platform with a small
DMA region.

To avoid such failure in cdns3_prepare_aligned_request_buf(),
dma_alloc_coherent() is replaced with dma_alloc_noncoherent()
to allocate aligned request buffer of dynamic length.

Reported-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Sanket Parmar <sparmar@cadence.com>
Signed-off-by: Peter Chen <peter.chen@kernel.org>
drivers/usb/cdns3/cdns3-gadget.c diff | blob | history
drivers/usb/cdns3/cdns3-gadget.h diff | blob | history
Domain: System / Kernel;