From 85136c0102852fe505c0fbd3f1bf9d17038bb94d Mon Sep 17 00:00:00 2001 From: Matias Bjørling Date: Tue, 11 Dec 2018 20:16:20 +0100 Subject: lightnvm: simplify geometry enumeration MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently the geometry of an OCSSD is enumerated using a two step approach: First, nvm_register is called, the OCSSD identify command is issued, and second the geometry sos and csecs values are read either from the OCSSD identify if it is a 1.2 drive, or from the NVMe namespace data structure if it is a 2.0 device. This patch recombines it into a single step, such that nvm_register can use the csecs and sos fields independent of which version is used. This enables one to dynamically size the lightnvm subsystem dma pool. Reviewed-by: Igor Konopko Reviewed-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- drivers/lightnvm/core.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) (limited to 'drivers/lightnvm') diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c index 10e541cb8dc3..69b841d682c7 100644 --- a/drivers/lightnvm/core.c +++ b/drivers/lightnvm/core.c @@ -1145,25 +1145,23 @@ int nvm_register(struct nvm_dev *dev) if (!dev->q || !dev->ops) return -EINVAL; + ret = nvm_init(dev); + if (ret) + return ret; + dev->dma_pool = dev->ops->create_dma_pool(dev, "ppalist"); if (!dev->dma_pool) { pr_err("nvm: could not create dma pool\n"); + nvm_free(dev); return -ENOMEM; } - ret = nvm_init(dev); - if (ret) - goto err_init; - /* register device with a supported media manager */ down_write(&nvm_lock); list_add(&dev->devices, &nvm_devices); up_write(&nvm_lock); return 0; -err_init: - dev->ops->destroy_dma_pool(dev->dma_pool); - return ret; } EXPORT_SYMBOL(nvm_register); -- cgit