diff options
Diffstat (limited to 'linux_spi.c')
| -rw-r--r-- | linux_spi.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/linux_spi.c b/linux_spi.c index 1d3605aae..714e612eb 100644 --- a/linux_spi.c +++ b/linux_spi.c @@ -221,8 +221,9 @@ static int linux_spi_send_command(struct flashctx *flash, unsigned int writecnt, static int linux_spi_read(struct flashctx *flash, uint8_t *buf, unsigned int start, unsigned int len) { - /* Read buffer is fully utilized for data. */ - return spi_read_chunked(flash, buf, start, len, max_kernel_buf_size); + /* Older kernels use a single buffer for combined input and output + data. So account for longest possible command + address, too. */ + return spi_read_chunked(flash, buf, start, len, max_kernel_buf_size - 5); } static int linux_spi_write_256(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len) |