diff options
| -rw-r--r-- | src/drivers/bus/ecam.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/drivers/bus/ecam.c b/src/drivers/bus/ecam.c index 62baebeed..5e3debddd 100644 --- a/src/drivers/bus/ecam.c +++ b/src/drivers/bus/ecam.c @@ -153,6 +153,14 @@ static int ecam_access ( struct pci_device *pci ) { base = le64_to_cpu ( ecam.alloc.base ); base += ( ecam.alloc.start * ECAM_SIZE * PCI_BUSDEVFN ( 0, 1, 0, 0 ) ); len = ( ecam.range.count * ECAM_SIZE ); + if ( base != ( ( unsigned long ) base ) ) { + DBGC ( &ecam, "ECAM %04x:[%02x-%02x] could not map " + "[%08llx,%08llx) outside CPU range\n", + le16_to_cpu ( ecam.alloc.segment ), ecam.alloc.start, + ecam.alloc.end, base, ( base + len ) ); + rc = -ERANGE; + goto err_range; + } ecam.regs = ioremap ( base, len ); if ( ! ecam.regs ) { DBGC ( &ecam, "ECAM %04x:[%02x-%02x] could not map " @@ -171,6 +179,7 @@ static int ecam_access ( struct pci_device *pci ) { iounmap ( ecam.regs ); err_ioremap: + err_range: err_find: ecam.rc = rc; return rc; |