From 157a5fe90ab92989c59b0494a51258e2dacf92f9 Mon Sep 17 00:00:00 2001 From: Himangi Saraogi Date: Tue, 15 Jul 2014 18:31:17 -0300 Subject: [PATCH] [media] dib7000m: Remove unnecessary null test This patch removes the null test on ch. ch is initialized at the beginning of the function to &demod->dtv_property_cache. Since demod is dereferenced prior to the null test, demod must be a valid pointer, and &demod->dtv_property_cache cannot be null. The following Coccinelle script is used for detecting the change: @r@ expression e,f; identifier g,y; statement S1,S2; @@ *e = &f->g <+... f->y ...+> *if (e != NULL || ...) S1 else S2 Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/dib7000m.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/media/dvb-frontends/dib7000m.c b/drivers/media/dvb-frontends/dib7000m.c index 148bf79236fb..dcb9a15ef0c2 100644 --- a/drivers/media/dvb-frontends/dib7000m.c +++ b/drivers/media/dvb-frontends/dib7000m.c @@ -1041,10 +1041,7 @@ static int dib7000m_tune(struct dvb_frontend *demod) u16 value; // we are already tuned - just resuming from suspend - if (ch != NULL) - dib7000m_set_channel(state, ch, 0); - else - return -EINVAL; + dib7000m_set_channel(state, ch, 0); // restart demod ret |= dib7000m_write_word(state, 898, 0x4000); -- 2.39.2