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path: root/drivers/media/dvb/frontends/drxd_hard.c
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Diffstat (limited to 'drivers/media/dvb/frontends/drxd_hard.c')
-rw-r--r--drivers/media/dvb/frontends/drxd_hard.c24
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/media/dvb/frontends/drxd_hard.c b/drivers/media/dvb/frontends/drxd_hard.c
index 2238bf0be959..88e46f4cdbb2 100644
--- a/drivers/media/dvb/frontends/drxd_hard.c
+++ b/drivers/media/dvb/frontends/drxd_hard.c
@@ -889,10 +889,15 @@ static int ReadIFAgc(struct drxd_state *state, u32 * pValue)
u32 R2 = state->if_agc_cfg.R2;
u32 R3 = state->if_agc_cfg.R3;
- u32 Vmax = (3300 * R2) / (R1 + R2);
- u32 Rpar = (R2 * R3) / (R3 + R2);
- u32 Vmin = (3300 * Rpar) / (R1 + Rpar);
- u32 Vout = Vmin + ((Vmax - Vmin) * Value) / 1024;
+ u32 Vmax, Rpar, Vmin, Vout;
+
+ if (R2 == 0 && (R1 == 0 || R3 == 0))
+ return 0;
+
+ Vmax = (3300 * R2) / (R1 + R2);
+ Rpar = (R2 * R3) / (R3 + R2);
+ Vmin = (3300 * Rpar) / (R1 + Rpar);
+ Vout = Vmin + ((Vmax - Vmin) * Value) / 1024;
*pValue = Vout;
}
@@ -926,16 +931,15 @@ static int DownloadMicrocode(struct drxd_state *state,
const u8 *pMCImage, u32 Length)
{
u8 *pSrc;
- u16 Flags;
u32 Address;
u16 nBlocks;
u16 BlockSize;
- u16 BlockCRC;
u32 offset = 0;
int i, status = 0;
pSrc = (u8 *) pMCImage;
- Flags = (pSrc[0] << 8) | pSrc[1];
+ /* We're not using Flags */
+ /* Flags = (pSrc[0] << 8) | pSrc[1]; */
pSrc += sizeof(u16);
offset += sizeof(u16);
nBlocks = (pSrc[0] << 8) | pSrc[1];
@@ -952,11 +956,13 @@ static int DownloadMicrocode(struct drxd_state *state,
pSrc += sizeof(u16);
offset += sizeof(u16);
- Flags = (pSrc[0] << 8) | pSrc[1];
+ /* We're not using Flags */
+ /* u16 Flags = (pSrc[0] << 8) | pSrc[1]; */
pSrc += sizeof(u16);
offset += sizeof(u16);
- BlockCRC = (pSrc[0] << 8) | pSrc[1];
+ /* We're not using BlockCRC */
+ /* u16 BlockCRC = (pSrc[0] << 8) | pSrc[1]; */
pSrc += sizeof(u16);
offset += sizeof(u16);
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