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mac80211: add pending fix for wrong resource_size() usage for ath11k
Add pending fix for wrong resource_size() usage that cause firmware crash on load on ath11k. Refresh all affected patch by this. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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2 changed files with 70 additions and 1 deletions
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From 88f17c87ddc9ee7467acdc322d383e5a443a55ab Mon Sep 17 00:00:00 2001
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From: Christian Marangi <ansuelsmth@gmail.com>
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Date: Mon, 8 Dec 2025 20:50:47 +0100
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Subject: [PATCH 1/2] wifi: ath11k: fix wrong usage of resource_size() causing
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firmware panic
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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On converting to the of_reserved_mem_region_to_resource() helper with
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commit 900730dc4705 ("wifi: ath: Use
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of_reserved_mem_region_to_resource() for "memory-region"") a logic error
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was introduced in the ath11k_core_coldboot_cal_support() if condition.
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The original code checked for hremote_node presence and skipped
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ath11k_core_coldboot_cal_support() in the other switch case but now
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everything is driven entirely on the values of the resource struct.
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resource_size() (in this case) is wrongly assumed to return a size of
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zero if the passed resource struct is init to zero. This is not the case
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as a resource struct should be always init with correct values (or at
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best set the end value to -1 to signal it's not configured)
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(the return value of resource_size() for a resource struct with start
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and end set to zero is 1)
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On top of this, using resource_size() to check if a resource struct is
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initialized or not is generally wrong and other measure should be used
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instead.
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To better handle this, use the DEFINE_RES macro to initialize the
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resource struct and set the IORESOURCE_UNSET flag by default.
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Replace the resource_size() check with checking for the resource struct
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flags and check if it's IORESOURCE_UNSET.
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This change effectively restore the original logic and restore correct
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loading of the ath11k firmware (restoring correct functionality of
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Wi-Fi)
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Cc: stable@vger.kernel.org
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Fixes: 900730dc4705 ("wifi: ath: Use of_reserved_mem_region_to_resource() for "memory-region"")
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Link: https://lore.kernel.org/all/20251207215359.28895-1-ansuelsmth@gmail.com/T/#m990492684913c5a158ff0e5fc90697d8ad95351b
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Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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---
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drivers/net/wireless/ath/ath11k/qmi.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/drivers/net/wireless/ath/ath11k/qmi.c
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+++ b/drivers/net/wireless/ath/ath11k/qmi.c
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@@ -2039,8 +2039,8 @@ static int ath11k_qmi_alloc_target_mem_c
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static int ath11k_qmi_assign_target_mem_chunk(struct ath11k_base *ab)
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{
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+ struct resource res = DEFINE_RES_NAMED(0, 0, NULL, IORESOURCE_UNSET);
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struct device *dev = ab->dev;
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- struct resource res = {};
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u32 host_ddr_sz;
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int i, idx, ret;
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@@ -2086,7 +2086,7 @@ static int ath11k_qmi_assign_target_mem_
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}
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if (ath11k_core_coldboot_cal_support(ab)) {
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- if (resource_size(&res)) {
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+ if (res.flags != IORESOURCE_UNSET) {
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ab->qmi.target_mem[idx].paddr =
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res.start + host_ddr_sz;
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ab->qmi.target_mem[idx].iaddr =
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@ -11,8 +11,8 @@ Signed-off-by: Ziyang Huang <hzyitc@outlook.com>
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--- a/drivers/net/wireless/ath/ath11k/qmi.c
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+++ b/drivers/net/wireless/ath/ath11k/qmi.c
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@@ -2042,6 +2042,7 @@ static int ath11k_qmi_assign_target_mem_
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struct resource res = DEFINE_RES_NAMED(0, 0, NULL, IORESOURCE_UNSET);
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struct device *dev = ab->dev;
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struct resource res = {};
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u32 host_ddr_sz;
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+ u32 addr;
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int i, idx, ret;
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