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media: solo6x10: simplify the logic at solo_p2m_dma_desc()

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The logic with gets a p2m_id is more complex than needed,
causing false positives with static analyzers:

	drivers/media/pci/solo6x10/solo6x10-p2m.c:81 solo_p2m_dma_desc() error: buffer overflow 'solo_dev->p2m_dev' 4 <= s32max

Make it simpler and use unsigned int.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2018-03-23 06:48:07 -04:00
parent d3c449e16f
commit 0df305eb50
1 changed files with 2 additions and 5 deletions
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7
drivers/media/pci/solo6x10/solo6x10-p2m.c
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@ -69,14 +69,11 @@ int solo_p2m_dma_desc(struct solo_dev *solo_dev,
unsigned int timeout;
unsigned int config = 0;
int ret = 0;
int p2m_id = 0;
unsigned int p2m_id = 0;
/* Get next ID. According to Softlogic, 6110 has problems on !=0 P2M */
if (solo_dev->type != SOLO_DEV_6110 && multi_p2m) {
if (solo_dev->type != SOLO_DEV_6110 && multi_p2m)
p2m_id = atomic_inc_return(&solo_dev->p2m_count) % SOLO_NR_P2M;
if (p2m_id < 0)
p2m_id = -p2m_id;
}
p2m_dev = &solo_dev->p2m_dev[p2m_id];