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lightnvm: do device max sectors boundary check first

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do device max_phys_sect boundary check first, otherwise
we will allocate dma_pools for devices whose max sectors
are beyond lightnvm support and register them.

Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Wenwei Tao 2015-11-28 16:49:25 +01:00 • committed by Jens Axboe
parent 76e25081b6
commit d160147b5c
1 changed files with 6 additions and 4 deletions
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10
drivers/lightnvm/core.c
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@ -308,6 +308,12 @@ int nvm_register(struct request_queue *q, char *disk_name,
if (ret) if (ret)
goto err_init; goto err_init;
if (dev->ops->max_phys_sect > 256) {
pr_info("nvm: max sectors supported is 256.\n");
ret = -EINVAL;
goto err_init;
}
if (dev->ops->max_phys_sect > 1) { if (dev->ops->max_phys_sect > 1) {
dev->ppalist_pool = dev->ops->create_dma_pool(dev->q, dev->ppalist_pool = dev->ops->create_dma_pool(dev->q,
"ppalist"); "ppalist");
@ -316,10 +322,6 @@ int nvm_register(struct request_queue *q, char *disk_name,
ret = -ENOMEM; ret = -ENOMEM;
goto err_init; goto err_init;
} }
} else if (dev->ops->max_phys_sect > 256) {
pr_info("nvm: max sectors supported is 256.\n");
ret = -EINVAL;
goto err_init;
} }
down_write(&nvm_lock); down_write(&nvm_lock);