[PATCH] hwrng: xilinx-trng: propagate timeout before any data is read

[Herbert Xu]

On Tue, Jun 23, 2026 at 02:07:27PM +0800, Pengpeng Hou wrote:
> xtrng_readblock32() polls for 16-byte chunks but returns the number of
> bytes read even when the first poll times out. Its caller then treats a
> zero return as a short successful read, and partial reads for full
> 32-byte blocks can make the tail copy use a fixed block offset rather
> than the amount already produced.
> 
> Return the poll error when no data has been read, preserve partial
> positive returns after some data is available, stop the generator on all
> collection exits, and append tail bytes at the current output count.
> 
> Signed-off-by: Pengpeng Hou <pengpeng at iscas.ac.cn>
> ---
>  drivers/char/hw_random/xilinx-trng.c | 32 +++++++++++++++++++++-------
>  1 file changed, 24 insertions(+), 8 deletions(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt