From 5da0831c598f94582bce6bb0a55b8de2f9897cb1 Mon Sep 17 00:00:00 2001 From: Douglas Thompson Date: Thu, 19 Jul 2007 01:49:31 -0700 Subject: drivers/edac: add edac_mc_find API This simple patch adds an important CORE API for EDAC that EDAC drivers can use to find their edac_mc control structure by passing a mem_ctl_info 'instance' value Needed for subsequent patches Signed-off-by: Douglas Thompson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/edac/edac_mc.c | 28 ++++++++++++++++++++++++++++ drivers/edac/edac_mc.h | 1 + 2 files changed, 29 insertions(+) diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index 804875de580..c1a8bf2bfa5 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -1456,6 +1456,34 @@ static void del_mc_from_global_list(struct mem_ctl_info *mci) wait_for_completion(&mci->complete); } +/** + * edac_mc_find: Search for a mem_ctl_info structure whose index is 'idx'. + * + * If found, return a pointer to the structure. + * Else return NULL. + * + * Caller must hold mem_ctls_mutex. + */ +struct mem_ctl_info * edac_mc_find(int idx) +{ + struct list_head *item; + struct mem_ctl_info *mci; + + list_for_each(item, &mc_devices) { + mci = list_entry(item, struct mem_ctl_info, link); + + if (mci->mc_idx >= idx) { + if (mci->mc_idx == idx) + return mci; + + break; + } + } + + return NULL; +} +EXPORT_SYMBOL(edac_mc_find); + /** * edac_mc_add_mc: Insert the 'mci' structure into the mci global list and * create sysfs entries associated with mci structure diff --git a/drivers/edac/edac_mc.h b/drivers/edac/edac_mc.h index 713444cc410..9ad8a20a8de 100644 --- a/drivers/edac/edac_mc.h +++ b/drivers/edac/edac_mc.h @@ -430,6 +430,7 @@ void edac_mc_dump_mci(struct mem_ctl_info *mci); void edac_mc_dump_csrow(struct csrow_info *csrow); #endif /* CONFIG_EDAC_DEBUG */ +extern struct mem_ctl_info * edac_mc_find(int idx); extern int edac_mc_add_mc(struct mem_ctl_info *mci,int mc_idx); extern struct mem_ctl_info * edac_mc_del_mc(struct device *dev); extern int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, -- cgit v1.2.3