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Improve ARM bus_dmamap_load_buffer() error handling.

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Reviewed by:	imp
Approved by:	cognet (mentor)
Spotted by:	Grzegorz Bernacki gjb AT semihalf DOT com
This commit is contained in:
Rafal Jaworowski 2008-03-12 15:31:37 +00:00
parent f312f6a655
commit 1397332d85
1 changed files with 4 additions and 2 deletions
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6
sys/arm/arm/busdma_machdep.c
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@ -755,7 +755,9 @@ bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dma_segment_t *segs,
* XXX in user address space.
*/
if (__predict_true(pmap == pmap_kernel())) {
(void) pmap_get_pde_pte(pmap, vaddr, &pde, &ptep);
if (pmap_get_pde_pte(pmap, vaddr, &pde, &ptep) == FALSE)
return (EFAULT);
if (__predict_false(pmap_pde_section(pde))) {
if (*pde & L1_S_SUPERSEC)
curaddr = (*pde & L1_SUP_FRAME) |
@ -903,7 +905,7 @@ bus_dmamap_load(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d",
__func__, dmat, dmat->flags, nsegs + 1, error);
return (0);
return (error);
}
/*