From 91124ac61216ed29405d96a29ec914624b196a79 Mon Sep 17 00:00:00 2001
From: Dave Jiang <dave.jiang@intel.com>
Date: Tue, 10 Mar 2020 10:51:09 -0700
Subject: [PATCH] dmaengine: idxd: remove global token limit check
Git-commit: 91124ac61216ed29405d96a29ec914624b196a79
Patch-mainline: v5.7-rc1
References: jsc#SLE-12688
The global token_limit is not tied to group tokens_reserved and
tokens_allowed parameters. Remove the check in order to allow independent
configuration.
Fixes: c52ca478233c ("dmaengine: idxd: add configuration component of driver")
Reported-by: Yixin Zhang <yixin.zhang@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/158386266911.11066.7545764533072221536.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/dma/idxd/sysfs.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index a74e99cb055d..65b08da41329 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -509,9 +509,6 @@ static ssize_t group_tokens_reserved_store(struct device *dev,
if (idxd->state == IDXD_DEV_ENABLED)
return -EPERM;
- if (idxd->token_limit == 0)
- return -EPERM;
-
if (val > idxd->max_tokens)
return -EINVAL;
@@ -557,8 +554,6 @@ static ssize_t group_tokens_allowed_store(struct device *dev,
if (idxd->state == IDXD_DEV_ENABLED)
return -EPERM;
- if (idxd->token_limit == 0)
- return -EPERM;
if (val < 4 * group->num_engines ||
val > group->tokens_reserved + idxd->nr_tokens)
return -EINVAL;
--
2.16.4