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media: c8sectpfe: fix potential NULL pointer dereference in c8sectpfe_timer_interrupt
_channel_ is being dereferenced before it is null checked, hence there is a
potential null pointer dereference. Fix this by moving the pointer dereference
after _channel_ has been null checked.
This issue was detected with the help of Coccinelle.
Fixes: c5f5d0f997
("[media] c8sectpfe: STiH407/10 Linux DVB demux support")
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
parent
32f2fe5944
commit
baed3c4bc4
1 changed files with 3 additions and 1 deletions
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@ -83,7 +83,7 @@ static void c8sectpfe_timer_interrupt(struct timer_list *t)
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static void channel_swdemux_tsklet(unsigned long data)
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{
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struct channel_info *channel = (struct channel_info *)data;
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struct c8sectpfei *fei = channel->fei;
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struct c8sectpfei *fei;
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unsigned long wp, rp;
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int pos, num_packets, n, size;
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u8 *buf;
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@ -91,6 +91,8 @@ static void channel_swdemux_tsklet(unsigned long data)
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if (unlikely(!channel || !channel->irec))
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return;
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fei = channel->fei;
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wp = readl(channel->irec + DMA_PRDS_BUSWP_TP(0));
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rp = readl(channel->irec + DMA_PRDS_BUSRP_TP(0));
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