From: Mauro Carvalho Chehab Date: Tue, 4 Nov 2014 20:35:07 +0000 (-0300) Subject: [media] af0933: Don't go past arrays X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=060f79d5758668c913a6d992feaa6b30f97f5d32;p=linux-beck.git [media] af0933: Don't go past arrays X-Patchwork-Delegate: m.chehab@samsung.com Fixes the following sparse warnings: drivers/media/dvb-frontends/af9033.c:295 af9033_init() error: buffer overflow 'clock_adc_lut' 11 <= 11 drivers/media/dvb-frontends/af9033.c:300 af9033_init() error: buffer overflow 'clock_adc_lut' 11 <= 11 drivers/media/dvb-frontends/af9033.c:584 af9033_set_frontend() error: buffer overflow 'coeff_lut' 3 <= 3 drivers/media/dvb-frontends/af9033.c:595 af9033_set_frontend() error: buffer overflow 'clock_adc_lut' 11 <= 11 Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb-frontends/af9033.c b/drivers/media/dvb-frontends/af9033.c index c17e34fd0fb4..82ce47bdf5dc 100644 --- a/drivers/media/dvb-frontends/af9033.c +++ b/drivers/media/dvb-frontends/af9033.c @@ -291,6 +291,12 @@ static int af9033_init(struct dvb_frontend *fe) if (clock_adc_lut[i].clock == dev->cfg.clock) break; } + if (i == ARRAY_SIZE(clock_adc_lut)) { + dev_err(&dev->client->dev, + "Couldn't find ADC config for clock=%d\n", + dev->cfg.clock); + goto err; + } adc_cw = af9033_div(dev, clock_adc_lut[i].adc, 1000000ul, 19ul); buf[0] = (adc_cw >> 0) & 0xff; @@ -580,7 +586,15 @@ static int af9033_set_frontend(struct dvb_frontend *fe) break; } } - ret = af9033_wr_regs(dev, 0x800001, + if (i == ARRAY_SIZE(coeff_lut)) { + dev_err(&dev->client->dev, + "Couldn't find LUT config for clock=%d\n", + dev->cfg.clock); + ret = -EINVAL; + goto err; + } + + ret = af9033_wr_regs(dev, 0x800001, coeff_lut[i].val, sizeof(coeff_lut[i].val)); } @@ -592,6 +606,13 @@ static int af9033_set_frontend(struct dvb_frontend *fe) if (clock_adc_lut[i].clock == dev->cfg.clock) break; } + if (i == ARRAY_SIZE(clock_adc_lut)) { + dev_err(&dev->client->dev, + "Couldn't find ADC clock for clock=%d\n", + dev->cfg.clock); + ret = -EINVAL; + goto err; + } adc_freq = clock_adc_lut[i].adc; /* get used IF frequency */