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commonlib/bubblesort: Do not try to sort less than two entries 

Before start sorting check for the number of entries in the data set. If
there are less than two entries, sorting makes no sense.

Change-Id: Ib9d5522cdebb6559a025217f7faf318589d55a2c
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31854
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
This commit is contained in:
Werner Zeh 2019-03-12 07:11:11 +01:00
parent fedb36e3c8
commit 1115f631dc
1 changed files with 4 additions and 0 deletions
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4
src/commonlib/sort.c
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@ -23,6 +23,10 @@ void bubblesort(int *v, size_t num_entries, sort_order_t order)
size_t i, j; size_t i, j;
int swapped; int swapped;
/* Make sure there are at least two entries to sort. */
if (num_entries < 2)
return;
for (j = 0; j < num_entries - 1; j++) { for (j = 0; j < num_entries - 1; j++) {
swapped = 0; swapped = 0;
for (i = 0; i < num_entries - j - 1; i++) { for (i = 0; i < num_entries - j - 1; i++) {