diff options
| author | John Keeping | 2023-03-27 12:01:09 +0100 |
|---|---|---|
| committer | Kever Yang | 2023-04-21 15:16:01 +0800 |
| commit | a48d13535a40b818f76c659602be70db6ebaa07a (patch) | |
| tree | 630ea19c4bcc449f61e1b54608e18ee4fdc1df59 /drivers | |
| parent | 999680c4ed80e21e014e94c9bdb79c45a5a5a853 (diff) | |
rockchip: efuse: fix misc_read() return values
The documentation for misc_read() says:
Return: number of bytes read if OK (may be 0 if EOF), -ve on error
The Rockchip efuse driver implements this so it should return the number
of bytes read rather than zero on success. Fix this so that the driver
follows the usual contract for read operations.
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/rockchip-efuse.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/misc/rockchip-efuse.c b/drivers/misc/rockchip-efuse.c index 60931a51312..2f96b79ea40 100644 --- a/drivers/misc/rockchip-efuse.c +++ b/drivers/misc/rockchip-efuse.c @@ -73,7 +73,7 @@ static int dump_efuse(struct cmd_tbl *cmdtp, int flag, for (i = 0; true; i += sizeof(data)) { ret = misc_read(dev, i, &data, sizeof(data)); - if (ret < 0) + if (ret <= 0) return 0; print_buffer(i, data, 1, sizeof(data), sizeof(data)); @@ -238,8 +238,10 @@ static int rockchip_efuse_read(struct udevice *dev, int offset, offset += data->offset; - if (data->block_size <= 1) - return data->read(dev, offset, buf, size); + if (data->block_size <= 1) { + ret = data->read(dev, offset, buf, size); + goto done; + } block_start = offset / data->block_size; block_offset = offset % data->block_size; @@ -255,7 +257,9 @@ static int rockchip_efuse_read(struct udevice *dev, int offset, memcpy(buf, buffer + block_offset, size); free(buffer); - return ret; + +done: + return ret < 0 ? ret : size; } static const struct misc_ops rockchip_efuse_ops = { |