From a749c6c03762f71ba4d04ead60b4f5df9ca2bf5e Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 26 Mar 2021 10:11:12 -0500 Subject: net: ipa: fix bug in resource group limit programming If the number of resource groups supported by the hardware is less than a certain number, we return early in ipa_resource_config_src() and ipa_resource_config_dst() (to avoid programming resource limits for non-existent groups). Unfortunately, these checks are off by one. Fix this problem in the four places it occurs. Signed-off-by: Alex Elder Signed-off-by: David S. Miller --- drivers/net/ipa/ipa_resource.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/net/ipa') diff --git a/drivers/net/ipa/ipa_resource.c b/drivers/net/ipa/ipa_resource.c index 2f0f2dca3678..edd9d1e5cbb6 100644 --- a/drivers/net/ipa/ipa_resource.c +++ b/drivers/net/ipa/ipa_resource.c @@ -139,14 +139,14 @@ static void ipa_resource_config_src(struct ipa *ipa, ylimits = group_count == 1 ? NULL : &resource->limits[1]; ipa_resource_config_common(ipa, offset, &resource->limits[0], ylimits); - if (group_count < 2) + if (group_count < 3) return; offset = IPA_REG_SRC_RSRC_GRP_23_RSRC_TYPE_N_OFFSET(resource->type); ylimits = group_count == 3 ? NULL : &resource->limits[3]; ipa_resource_config_common(ipa, offset, &resource->limits[2], ylimits); - if (group_count < 4) + if (group_count < 5) return; offset = IPA_REG_SRC_RSRC_GRP_45_RSRC_TYPE_N_OFFSET(resource->type); @@ -165,14 +165,14 @@ static void ipa_resource_config_dst(struct ipa *ipa, ylimits = group_count == 1 ? NULL : &resource->limits[1]; ipa_resource_config_common(ipa, offset, &resource->limits[0], ylimits); - if (group_count < 2) + if (group_count < 3) return; offset = IPA_REG_DST_RSRC_GRP_23_RSRC_TYPE_N_OFFSET(resource->type); ylimits = group_count == 3 ? NULL : &resource->limits[3]; ipa_resource_config_common(ipa, offset, &resource->limits[2], ylimits); - if (group_count < 4) + if (group_count < 5) return; offset = IPA_REG_DST_RSRC_GRP_45_RSRC_TYPE_N_OFFSET(resource->type); -- cgit v1.2.3