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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2018-09-21 10:40:43 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-09-21 13:14:27 +0200 |
| commit | 8bc9f5d6085a3941c5a6c767efb96713d4e5c066 (patch) | |
| tree | e4f9d548979ef1a57b97307d8a615550643acacd /drivers | |
| parent | 06095d24066649742b8d3e3de2da278d08ef7512 (diff) | |
| download | barebox-8bc9f5d6085a3941c5a6c767efb96713d4e5c066.tar.gz barebox-8bc9f5d6085a3941c5a6c767efb96713d4e5c066.tar.xz | |
mtd: mtdraw: do not write empty buffers
When a page is completely 0xff then do not write it since users
expect pages to be writable when they are empty.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/mtdraw.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mtd/mtdraw.c b/drivers/mtd/mtdraw.c index 3ad9de80a2..bfae795bd7 100644 --- a/drivers/mtd/mtdraw.c +++ b/drivers/mtd/mtdraw.c @@ -165,6 +165,9 @@ static ssize_t mtdraw_blkwrite(struct mtd_info *mtd, const void *buf, struct mtd_oob_ops ops; int ret; + if (mtd_buf_all_ff(buf, mtd->writesize + mtd->oobsize)) + return 0; + ops.mode = MTD_OPS_RAW; ops.ooboffs = 0; ops.datbuf = (void *)buf; |