Commit 0f787c12 authored by Aditya Pakki's avatar Aditya Pakki Committed by Mauro Carvalho Chehab

media: dvb: add return value check on Write16

Write16 can return an error code -1 when the i2c_write fails. The
fix checks for these failures and returns the error upstream
Signed-off-by: default avatarAditya Pakki <pakki001@umn.edu>
Signed-off-by: default avatarSean Young <sean@mess.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 88903a1a
......@@ -1144,6 +1144,8 @@ static int EnableAndResetMB(struct drxd_state *state)
static int InitCC(struct drxd_state *state)
{
int status = 0;
if (state->osc_clock_freq == 0 ||
state->osc_clock_freq > 20000 ||
(state->osc_clock_freq % 4000) != 0) {
......@@ -1151,14 +1153,17 @@ static int InitCC(struct drxd_state *state)
return -1;
}
Write16(state, CC_REG_OSC_MODE__A, CC_REG_OSC_MODE_M20, 0);
Write16(state, CC_REG_PLL_MODE__A, CC_REG_PLL_MODE_BYPASS_PLL |
CC_REG_PLL_MODE_PUMP_CUR_12, 0);
Write16(state, CC_REG_REF_DIVIDE__A, state->osc_clock_freq / 4000, 0);
Write16(state, CC_REG_PWD_MODE__A, CC_REG_PWD_MODE_DOWN_PLL, 0);
Write16(state, CC_REG_UPDATE__A, CC_REG_UPDATE_KEY, 0);
status |= Write16(state, CC_REG_OSC_MODE__A, CC_REG_OSC_MODE_M20, 0);
status |= Write16(state, CC_REG_PLL_MODE__A,
CC_REG_PLL_MODE_BYPASS_PLL |
CC_REG_PLL_MODE_PUMP_CUR_12, 0);
status |= Write16(state, CC_REG_REF_DIVIDE__A,
state->osc_clock_freq / 4000, 0);
status |= Write16(state, CC_REG_PWD_MODE__A, CC_REG_PWD_MODE_DOWN_PLL,
0);
status |= Write16(state, CC_REG_UPDATE__A, CC_REG_UPDATE_KEY, 0);
return 0;
return status;
}
static int ResetECOD(struct drxd_state *state)
......@@ -1312,7 +1317,10 @@ static int SC_SendCommand(struct drxd_state *state, u16 cmd)
int status = 0, ret;
u16 errCode;
Write16(state, SC_RA_RAM_CMD__A, cmd, 0);
status = Write16(state, SC_RA_RAM_CMD__A, cmd, 0);
if (status < 0)
return status;
SC_WaitForReady(state);
ret = Read16(state, SC_RA_RAM_CMD_ADDR__A, &errCode, 0);
......@@ -1339,9 +1347,9 @@ static int SC_ProcStartCommand(struct drxd_state *state,
break;
}
SC_WaitForReady(state);
Write16(state, SC_RA_RAM_CMD_ADDR__A, subCmd, 0);
Write16(state, SC_RA_RAM_PARAM1__A, param1, 0);
Write16(state, SC_RA_RAM_PARAM0__A, param0, 0);
status |= Write16(state, SC_RA_RAM_CMD_ADDR__A, subCmd, 0);
status |= Write16(state, SC_RA_RAM_PARAM1__A, param1, 0);
status |= Write16(state, SC_RA_RAM_PARAM0__A, param0, 0);
SC_SendCommand(state, SC_RA_RAM_CMD_PROC_START);
} while (0);
......
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