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authorAlexander Fomichev <fomichev.ru@gmail.com>2020-02-13 18:05:07 +0300
committerJon Mason <jdmason@kudzu.us>2020-03-13 17:03:49 +0300
commit788b041afd9a66ce3871734e87e908dc47739f39 (patch)
tree5a03c3f62facdaf149a336fe8693e1091acfd17d /drivers/ntb/hw
parent2ef97a6c181eba48f14c9ed98ce4398d21164683 (diff)
downloadlinux-788b041afd9a66ce3871734e87e908dc47739f39.tar.xz
ntb_hw_switchtec: Fix ntb_mw_clear_trans error if size == 0
ntb_mw_set_trans() should work as ntb_mw_clear_trans() when size == 0 and/or addr == 0. But error in xlate_pos checking condition prevents this. Fix the condition to make ntb_mw_clear_trans() working. Fixes: 87d11e645e31 (NTB: switchtec_ntb: Add memory window support) Signed-off-by: Alexander Fomichev <fomichev.ru@gmail.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/ntb/hw')
-rw-r--r--drivers/ntb/hw/mscc/ntb_hw_switchtec.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
index 86ffa716eaf2..4c6eb61a6ac6 100644
--- a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
+++ b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
@@ -285,7 +285,7 @@ static int switchtec_ntb_mw_set_trans(struct ntb_dev *ntb, int pidx, int widx,
if (widx >= switchtec_ntb_mw_count(ntb, pidx))
return -EINVAL;
- if (xlate_pos < 12)
+ if (size != 0 && xlate_pos < 12)
return -EINVAL;
if (!IS_ALIGNED(addr, BIT_ULL(xlate_pos))) {