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Date: Fri, 31 Aug 2018 10:12:44 +0300 From: Adrian Hunter <adrian.hunter@...el.com> To: Sayali Lokhande <sayalil@...eaurora.org>, subhashj@...eaurora.org, cang@...eaurora.org, vivek.gautam@...eaurora.org, rnayak@...eaurora.org, vinholikatti@...il.com, jejb@...ux.vnet.ibm.com, martin.petersen@...cle.com, asutoshd@...eaurora.org, evgreen@...omium.org, riteshh@...eaurora.org Cc: stummala@...eaurora.org, jlbec@...lplan.org, linux-scsi@...r.kernel.org, open list <linux-kernel@...r.kernel.org> Subject: Re: [PATCH V12 2/2] scsi: ufs: Add configfs support for UFS provisioning On 30/08/18 13:46, Sayali Lokhande wrote: > This patch adds configfs support to provision UFS device at > runtime. This feature can be primarily useful in factory or > assembly line as some devices may be required to be configured > multiple times during initial system development phase. > Configuration Descriptors can be written multiple times until > bConfigDescrLock attribute is zero. > > Configuration descriptor buffer consists of Device and Unit > descriptor configurable parameters which are parsed from vendor > specific provisioning file and then passed via configfs node at > runtime to provision ufs device. > CONFIG_CONFIGFS_FS and CONFIG_UFS_PROVISION needs to be enabled > for using this feature. > > Usage: > 1) To read current configuration descriptor with index X > (where index X can be 0/1/2/3) : > cat /config/XXXX.ufshc/ufs_config_desc_X > > 2) To write configuration descriptor with index X : > echo <config_desc_buf> > /config/XXXX.ufshc/ufs_config_desc_X > > Signed-off-by: Sayali Lokhande <sayalil@...eaurora.org> > --- <SNIP> > +static struct configfs_attribute ufshcd_attr_provision_0 = { Actually, wasn't the original suggestion to use a binary attribute? i.e. configfs_bin_attribute
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