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| author |   Sanket Parmar <sparmar@cadence.com> | 2021-03-22 11:26:30 +0100 |
|---|---|---|
| committer |   Peter Chen <peter.chen@kernel.org> | 2021-04-12 20:19:22 +0800 |
| commit | 8430e98f2c877e2034e5a5adaa6bf0b4a3041e1d (patch) | |
| tree | 0ec0f483c7e0f20b07da649264047c6596462877 /drivers/usb/cdns3/cdns3-gadget.h | |
| parent | usb: cdns3: Use dma_pool_* api to alloc trb pool (diff) | |
| download | wireguard-linux-8430e98f2c877e2034e5a5adaa6bf0b4a3041e1d.tar.xz wireguard-linux-8430e98f2c877e2034e5a5adaa6bf0b4a3041e1d.zip | |
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>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-gadget.h')
| -rw-r--r-- | drivers/usb/cdns3/cdns3-gadget.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/cdns3/cdns3-gadget.h b/drivers/usb/cdns3/cdns3-gadget.h index ecf9b91ccbb9..c5660f2c4293 100644 --- a/drivers/usb/cdns3/cdns3-gadget.h +++ b/drivers/usb/cdns3/cdns3-gadget.h @@ -12,6 +12,7 @@ #ifndef __LINUX_CDNS3_GADGET #define __LINUX_CDNS3_GADGET #include <linux/usb/gadget.h> +#include <linux/dma-direction.h> /* * USBSS-DEV register interface. @@ -1205,6 +1206,7 @@ struct cdns3_aligned_buf { void *buf; dma_addr_t dma; u32 size; + enum dma_data_direction dir; unsigned in_use:1; struct list_head list; }; |