On Thu, Jul 15, 2021 at 12:46:30AM +0000, Yoshitaka Ikeda wrote:
> Fix below division by zero warning:
> - Added an if statement because buswidth can be zero, resulting in division by zero.
> - The modified code was based on another driver (atmel-quadspi).

This doesn't apply against current code, please check and resend:

Applying: spi: spi-cadence-quadspi: Fix division by zero warning
Using index info to reconstruct a base tree...
error: patch failed: drivers/spi/spi-cadence-quadspi.c:307
error: drivers/spi/spi-cadence-quadspi.c: patch does not apply
error: Did you hand edit your patch?
It does not apply to blobs recorded in its index.
Patch failed at 0001 spi: spi-cadence-quadspi: Fix division by zero warning