dmaengine: idxd: remove global token limit check

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>

diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index a74e99cb055d82c31de82db5d89b3e5c9089eb06..65b08da41329fd03e798000affb531e9b55a3ccf 100644 (file)
--- 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;