diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2017-03-13 14:36:36 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-04-24 21:42:01 +0200 |
| commit | 7b410d074b253a44624497a18e73f666a9574f37 (patch) | |
| tree | 50c8855b01206c4843e6d088acadca59f0ce2657 /drivers/mmc/core/block.c | |
| parent | cdf8a6fb48882651049e468e6b16956fb83db86c (diff) | |
mmc: queue: Share mmc request array between partitions
eMMC can have multiple internal partitions that are represented as separate
disks / queues. However switching between partitions is only done when the
queue is empty. Consequently the array of mmc requests that are queued can
be shared between partitions saving memory.
Keep a pointer to the mmc request queue on the card, and use that instead
of allocating a new one for each partition.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core/block.c')
| -rw-r--r-- | drivers/mmc/core/block.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 16c313a62129..018488e7f194 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -2123,6 +2123,7 @@ static int mmc_blk_probe(struct mmc_card *card) { struct mmc_blk_data *md, *part_md; char cap_str[10]; + int ret; /* * Check that the card supports the command class(es) we need. @@ -2132,9 +2133,15 @@ static int mmc_blk_probe(struct mmc_card *card) mmc_fixup_device(card, mmc_blk_fixups); + ret = mmc_queue_alloc_shared_queue(card); + if (ret) + return ret; + md = mmc_blk_alloc(card); - if (IS_ERR(md)) + if (IS_ERR(md)) { + mmc_queue_free_shared_queue(card); return PTR_ERR(md); + } string_get_size((u64)get_capacity(md->disk), 512, STRING_UNITS_2, cap_str, sizeof(cap_str)); @@ -2172,6 +2179,7 @@ static int mmc_blk_probe(struct mmc_card *card) out: mmc_blk_remove_parts(card, md); mmc_blk_remove_req(md); + mmc_queue_free_shared_queue(card); return 0; } @@ -2189,6 +2197,7 @@ static void mmc_blk_remove(struct mmc_card *card) pm_runtime_put_noidle(&card->dev); mmc_blk_remove_req(md); dev_set_drvdata(&card->dev, NULL); + mmc_queue_free_shared_queue(card); } static int _mmc_blk_suspend(struct mmc_card *card) |