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authorQiuxu Zhuo <qiuxu.zhuo@intel.com>2021-12-24 04:11:26 -0500
committerTony Luck <tony.luck@intel.com>2022-01-04 09:08:00 -0800
commitc370baa328022cbd46c59c821d1b467a97f047be (patch)
treef0a0e5bb84c7c0930966146269792e03c7581e2c /drivers/edac/i10nm_base.c
parentc9e6606c7fe92b50a02ce51dda82586ebdf99b48 (diff)
EDAC/i10nm: Release mdev/mbase when failing to detect HBM
On systems without HBM (High Bandwidth Memory) mdev/mbase are not released/unmapped. Add the code to release mdev/mbase when failing to detect HBM. [Tony: re-word commit message] Cc: <stable@vger.kernel.org> Fixes: c945088384d0 ("EDAC/i10nm: Add support for high bandwidth memory") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Link: https://lore.kernel.org/r/20211224091126.1246-1-qiuxu.zhuo@intel.com
Diffstat (limited to 'drivers/edac/i10nm_base.c')
-rw-r--r--drivers/edac/i10nm_base.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c
index 83345bfac246..6cf50ee0b77c 100644
--- a/drivers/edac/i10nm_base.c
+++ b/drivers/edac/i10nm_base.c
@@ -358,6 +358,9 @@ static int i10nm_get_hbm_munits(void)
mbase = ioremap(base + off, I10NM_HBM_IMC_MMIO_SIZE);
if (!mbase) {
+ pci_dev_put(d->imc[lmc].mdev);
+ d->imc[lmc].mdev = NULL;
+
i10nm_printk(KERN_ERR, "Failed to ioremap for hbm mc 0x%llx\n",
base + off);
return -ENOMEM;
@@ -368,6 +371,12 @@ static int i10nm_get_hbm_munits(void)
mcmtr = I10NM_GET_MCMTR(&d->imc[lmc], 0);
if (!I10NM_IS_HBM_IMC(mcmtr)) {
+ iounmap(d->imc[lmc].mbase);
+ d->imc[lmc].mbase = NULL;
+ d->imc[lmc].hbm_mc = false;
+ pci_dev_put(d->imc[lmc].mdev);
+ d->imc[lmc].mdev = NULL;
+
i10nm_printk(KERN_ERR, "This isn't an hbm mc!\n");
return -ENODEV;
}