evie/android_kernel_oneplus_msm8998
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msm: mdss: avoid DSI read commands with rlen value of zero

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The minimum value of parameter for Maximum Return Packet Size
command before DSI command rx should be 1. Avoid any DSI read
commands with rlen value of zero.

Change-Id: Ieaf8d3f478047e726888f29db2838dbb7196d57a
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
This commit is contained in:
Padmanabhan Komanduru 2014-09-05 21:53:53 +05:30 • committed by David Keitel
parent b3cf731350
commit 72454981c6
2 changed files with 6 additions and 1 deletions
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5
drivers/video/fbdev/msm/mdss_dsi_host.c
View file

@ -996,6 +996,11 @@ int mdss_dsi_cmds_rx(struct mdss_dsi_ctrl_pdata *ctrl,
return rlen;
}
if (rlen == 0) {
pr_debug("%s: Minimum MRPS value should be 1\n", __func__);
return 0;
}
/*
* Turn on cmd mode in order to transmit the commands.
* For video mode, do not send cmds more than one pixel line,

2
drivers/video/fbdev/msm/mdss_dsi_panel.c
View file

@ -1548,7 +1548,7 @@ static int mdss_panel_parse_dt(struct device_node *np,
ctrl_pdata->status_mode = ESD_BTA;
} else if (!strcmp(data, "reg_read")) {
ctrl_pdata->status_mode = ESD_REG;
ctrl_pdata->status_cmds_rlen = 0;
ctrl_pdata->status_cmds_rlen = 1;
ctrl_pdata->check_read_status =
mdss_dsi_gen_read_status;
} else if (!strcmp(data, "reg_read_nt35596")) {