diff options
Diffstat (limited to 'target/linux/generic/pending-4.19/450-mtd-spi-nor-allow-NOR-driver-to-write-fewer-bytes-th.patch')
| -rw-r--r-- | target/linux/generic/pending-4.19/450-mtd-spi-nor-allow-NOR-driver-to-write-fewer-bytes-th.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.19/450-mtd-spi-nor-allow-NOR-driver-to-write-fewer-bytes-th.patch b/target/linux/generic/pending-4.19/450-mtd-spi-nor-allow-NOR-driver-to-write-fewer-bytes-th.patch new file mode 100644 index 0000000000..571c9b885f --- /dev/null +++ b/target/linux/generic/pending-4.19/450-mtd-spi-nor-allow-NOR-driver-to-write-fewer-bytes-th.patch @@ -0,0 +1,36 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Thu, 22 Feb 2018 11:11:57 +0100 +Subject: [PATCH] mtd: spi-nor: allow NOR driver to write fewer bytes than + requested + +The write size can be constrained by the maximum message/transfer size +of the SPI controller. Only check for ret = 0 to avoid an infinite loop. + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/drivers/mtd/spi-nor/spi-nor.c ++++ b/drivers/mtd/spi-nor/spi-nor.c +@@ -1377,7 +1377,7 @@ static int spi_nor_write(struct mtd_info + + write_enable(nor); + ret = nor->write(nor, addr, page_remain, buf + i); +- if (ret < 0) ++ if (ret <= 0) + goto write_err; + written = ret; + +@@ -1386,13 +1386,6 @@ static int spi_nor_write(struct mtd_info + goto write_err; + *retlen += written; + i += written; +- if (written != page_remain) { +- dev_err(nor->dev, +- "While writing %zu bytes written %zd bytes\n", +- page_remain, written); +- ret = -EIO; +- goto write_err; +- } + } + + write_err: |