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mmc_test: fix memory allocation segment limits

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Correctly allocate memory to meet the host controller
driver's maximum segment size and count limits.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Adrian Hunter 2010-09-23 14:51:29 +03:00 • committed by Chris Ball
parent 130067ed15
commit 3d203be833
1 changed files with 6 additions and 6 deletions
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12
drivers/mmc/card/mmc_test.c
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@ -318,8 +318,8 @@ static struct mmc_test_mem *mmc_test_alloc_mem(unsigned long min_sz,
if (max_page_cnt > limit) if (max_page_cnt > limit)
max_page_cnt = limit; max_page_cnt = limit;
if (max_page_cnt < min_page_cnt) if (min_page_cnt > max_page_cnt)
max_page_cnt = min_page_cnt; min_page_cnt = max_page_cnt;
if (max_seg_page_cnt > max_page_cnt) if (max_seg_page_cnt > max_page_cnt)
max_seg_page_cnt = max_page_cnt; max_seg_page_cnt = max_page_cnt;
@ -359,13 +359,13 @@ static struct mmc_test_mem *mmc_test_alloc_mem(unsigned long min_sz,
mem->cnt += 1; mem->cnt += 1;
if (max_page_cnt <= (1UL << order)) if (max_page_cnt <= (1UL << order))
break; break;
max_page_cnt -= 1UL << order;
page_cnt += 1UL << order;
if (mem->cnt >= max_segs) { if (mem->cnt >= max_segs) {
if (page_cnt < min_page_cnt) if (page_cnt < min_page_cnt)
goto out_free; goto out_free;
break; break;
} }
max_page_cnt -= 1UL << order;
page_cnt += 1UL << order;
} }
return mem; return mem;
@ -1470,12 +1470,12 @@ static int mmc_test_area_init(struct mmc_test_card *test, int erase, int fill)
t->max_tfr = t->max_segs * t->max_seg_sz; t->max_tfr = t->max_segs * t->max_seg_sz;
/* /*
* Try to allocate enough memory for the whole area. Less is OK * Try to allocate enough memory for a max. sized transfer. Less is OK
* because the same memory can be mapped into the scatterlist more than * because the same memory can be mapped into the scatterlist more than
* once. Also, take into account the limits imposed on scatterlist * once. Also, take into account the limits imposed on scatterlist
* segments by the host driver. * segments by the host driver.
*/ */
t->mem = mmc_test_alloc_mem(min_sz, t->max_sz, t->max_segs, t->mem = mmc_test_alloc_mem(min_sz, t->max_tfr, t->max_segs,
t->max_seg_sz); t->max_seg_sz);
if (!t->mem) if (!t->mem)
return -ENOMEM; return -ENOMEM;