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fix match_classcode()

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This commit is contained in:
Markus Fröschle
2016-12-06 16:15:58 +00:00
parent 0cdad1241c
commit 2a7ed03019
1 changed files with 3 additions and 3 deletions
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6
pci/pci.c
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@@ -506,7 +506,7 @@ int32_t pci_find_device(uint16_t device_id, uint16_t vendor_id, int index)
static bool match_classcode(uint32_t handle, uint32_t classcode) static bool match_classcode(uint32_t handle, uint32_t classcode)
{ {
uint8_t find_mask = (classcode >> 24) & 0xff; uint8_t find_mask = (classcode >> 24) & 0xff;
uint32_t value = pci_read_config_longword(handle, PCICCR); uint32_t value = swpl(pci_read_config_longword(handle, PCICCR));
int i; int i;
dbg("classcode=0x%08x, value=0x%08x\r\n", classcode, value); dbg("classcode=0x%08x, value=0x%08x\r\n", classcode, value);
@@ -515,8 +515,8 @@ static bool match_classcode(uint32_t handle, uint32_t classcode)
{ {
if ((find_mask >> i) & 1) if ((find_mask >> i) & 1)
{ {
dbg("compare 0x%02x against 0x%02x\r\n", (value >> (i * 8)) & 0xff, (classcode >> (i * 8)) & 0xff); dbg("compare 0x%02x against 0x%02x\r\n", (value >> ((i + 1) * 8)) & 0xff, (classcode >> (i * 8)) & 0xff);
if (! (((value >> (i * 8)) & 0xff) == ((classcode >> (i * 8)) & 0xff))) if (! (((value >> ((i + 1) * 8)) & 0xff) == ((classcode >> (i * 8)) & 0xff)))
return false; return false;
} }
} }