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| author |   Philippe Cornu <philippe.cornu@st.com> | 2018-01-25 11:38:00 +0100 |
|---|---|---|
| committer |   Archit Taneja <architt@codeaurora.org> | 2018-01-30 16:19:17 +0530 |
| commit | 1a1c130cca78c77209cd795282d93297640fb63e (patch) | |
| tree | 6aafa9a7c8933dcde96ad80d5d4d48a70ae95b9c /drivers/gpu/drm/bridge/synopsys | |
| parent | drm/bridge/synopsys: dsi: Add a warning msg on dsi read requests (diff) | |
| download | linux-dev-1a1c130cca78c77209cd795282d93297640fb63e.tar.xz linux-dev-1a1c130cca78c77209cd795282d93297640fb63e.zip | |
drm/bridge/synopsys: dsi: Fix dsi_host_transfer() return value
The dw_mipi_dsi_host_transfer() must return the number of
bytes transmitted/received on success instead of 0.
Note: As the read feature is not implemented, only the
transmitted number of bytes is returned for the moment.
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180125103800.1999-3-philippe.cornu@st.com
Diffstat (limited to 'drivers/gpu/drm/bridge/synopsys')
| -rw-r--r-- | drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 37d13ccad2e7..d098e2329868 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -412,7 +412,16 @@ static ssize_t dw_mipi_dsi_host_transfer(struct mipi_dsi_host *host, dw_mipi_message_config(dsi, msg); - return dw_mipi_dsi_write(dsi, &packet); + ret = dw_mipi_dsi_write(dsi, &packet); + if (ret) + return ret; + + /* + * TODO Only transmitted size is returned as actual driver does + * not support dcs/generic reads. Please update return value when + * delivering the read feature. + */ + return packet.size; } static const struct mipi_dsi_host_ops dw_mipi_dsi_host_ops = { |