From d160147b5c96ef5ec842c604ccd79f5f03306677 Mon Sep 17 00:00:00 2001 From: Wenwei Tao Date: Sat, 28 Nov 2015 16:49:25 +0100 Subject: [PATCH] lightnvm: do device max sectors boundary check first MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- drivers/lightnvm/core.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c index ea50fa5b6ba6d..ea6dba530f0a8 100644 --- a/drivers/lightnvm/core.c +++ b/drivers/lightnvm/core.c @@ -308,6 +308,12 @@ int nvm_register(struct request_queue *q, char *disk_name, if (ret) 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) { dev->ppalist_pool = dev->ops->create_dma_pool(dev->q, "ppalist"); @@ -316,10 +322,6 @@ int nvm_register(struct request_queue *q, char *disk_name, ret = -ENOMEM; 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);