From: Colin Ian King <colin.king@xxxxxxxxxxxxx> Subject: mm/hmm.c: remove unused variables align_start and align_end Variables align_start and align_end are being assigned but are never used hence they are redundant and can be removed. Cleans up clang warnings: warning: variable 'align_start' set but not used [-Wunused-but-set-variable] warning: variable 'align_size' set but not used [-Wunused-but-set-variable] Link: http://lkml.kernel.org/r/20180714161124.3923-1-colin.king@xxxxxxxxxxxxx Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/hmm.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) --- a/mm/hmm.c~mm-hmmc-remove-unused-variables-align_start-and-align_end +++ a/mm/hmm.c @@ -973,10 +973,7 @@ static RADIX_TREE(hmm_devmem_radix, GFP_ static void hmm_devmem_radix_release(struct resource *resource) { - resource_size_t key, align_start, align_size; - - align_start = resource->start & ~(PA_SECTION_SIZE - 1); - align_size = ALIGN(resource_size(resource), PA_SECTION_SIZE); + resource_size_t key; mutex_lock(&hmm_devmem_lock); for (key = resource->start; _
