The Coverity checker spotted the following buggy code in
drivers/media/dvb/frontends/tda10023.c:
<-- snip -->
...
#define XTAL 28920000UL
#define PLL_M 8UL
#define PLL_P 4UL
#define PLL_N 1UL
#define SYSCLK (XTAL*PLL_M/(PLL_N*PLL_P)) // -> 57840000
...
static int tda10023_set_symbolrate (struct tda10023_state* state, u32 sr)
{
...
if (sr<870000)
sr=870000;
if (sr < (u32)(SYSCLK/98.40)) {
NDEC=3;
SFIL=1;
} else if (sr<(u32)(SYSCLK/64.0)) {
NDEC=3;
SFIL=0;
} else if (sr<(u32)(SYSCLK/49.2)) {
NDEC=2;
SFIL=1;
} else if (sr<(u32)(SYSCLK/32.0)) {
NDEC=2;
SFIL=0;
} else if (sr<(u32)(SYSCLK/24.6)) {
NDEC=1;
SFIL=1;
} else if (sr<(u32)(SYSCLK/16.0)) {
NDEC=1;
SFIL=0;
} else if (sr<(u32)(SYSCLK/12.3)) {
NDEC=0;
SFIL=1;
}
...
}
...
<-- snip -->
57840000 / 98.40 = 587804 < 870000
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
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