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fix: call rwb->rhreload() when nblocks > 0

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There is no need to call rwb->rhreloade() when nblocks is 0,
and some platform(eg: BES) has the limit that the parameter
of len in pltatform flash read function cant't be 0.
This commit is contained in:
ChenChuang 2024-05-17 16:19:42 +08:00 committed by Xiang Xiao
parent 8b1a388d93
commit 1d19c6abe3
1 changed files with 5 additions and 2 deletions
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7
drivers/misc/rwbuffer.c
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@ -352,8 +352,8 @@ static ssize_t rwb_writebuffer(FAR struct rwbuffer_s *rwb,
padblocks = startblock % rwb->wralignblocks;
rwb->wrblockstart = startblock - padblocks;
rwb_read_(rwb, rwb->wrblockstart, padblocks, rwb->wrbuffer);
rwb->wrnblocks = padblocks;
rwb_read_(rwb, rwb->wrblockstart, padblocks, rwb->wrbuffer);
if (remain > rwb->wrmaxblocks - padblocks)
{
@ -977,7 +977,10 @@ static ssize_t rwb_read_(FAR struct rwbuffer_s *rwb, off_t startblock,
* the user buffer.
*/
ret = rwb->rhreload(rwb->dev, rdbuffer, startblock, nblocks);
if (nblocks)
{
ret = rwb->rhreload(rwb->dev, rdbuffer, startblock, nblocks);
}
}
return ret;