5.15-stable patches

added patches:
	net-wwan-iosm-remove-pointless-null-check.patch

diff --git a/queue-5.15/net-wwan-iosm-remove-pointless-null-check.patch b/queue-5.15/net-wwan-iosm-remove-pointless-null-check.patch
new file mode 100644 (file)
index 0000000..a2d6165
--- /dev/null
+++ b/queue-5.15/net-wwan-iosm-remove-pointless-null-check.patch
@@ -0,0 +1,58 @@
+From dbbc7d04c549a43ad343c69e17b27a57e2102041 Mon Sep 17 00:00:00 2001
+From: Jakub Kicinski <kuba@kernel.org>
+Date: Wed, 18 May 2022 17:43:42 -0700
+Subject: net: wwan: iosm: remove pointless null check
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Jakub Kicinski <kuba@kernel.org>
+
+commit dbbc7d04c549a43ad343c69e17b27a57e2102041 upstream.
+
+GCC 12 warns:
+
+drivers/net/wwan/iosm/iosm_ipc_protocol_ops.c: In function ‘ipc_protocol_dl_td_process’:
+drivers/net/wwan/iosm/iosm_ipc_protocol_ops.c:406:13: warning: the comparison will always evaluate as ‘true’ for the address of ‘cb’ will never be NULL [-Waddress]
+  406 |         if (!IPC_CB(skb)) {
+      |             ^
+
+Indeed the check seems entirely pointless. Hopefully the other
+validation checks will catch if the cb is bad, but it can't be
+NULL.
+
+Reviewed-by: M Chetan Kumar <m.chetan.kumar@intel.com>
+Link: https://lore.kernel.org/r/20220519004342.2109832-1-kuba@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/net/wwan/iosm/iosm_ipc_protocol_ops.c |   10 ----------
+ 1 file changed, 10 deletions(-)
+
+--- a/drivers/net/wwan/iosm/iosm_ipc_protocol_ops.c
++++ b/drivers/net/wwan/iosm/iosm_ipc_protocol_ops.c
+@@ -372,8 +372,6 @@ bool ipc_protocol_dl_td_prepare(struct i
+ struct sk_buff *ipc_protocol_dl_td_process(struct iosm_protocol *ipc_protocol,
+                                          struct ipc_pipe *pipe)
+ {
+-      u32 tail =
+-              le32_to_cpu(ipc_protocol->p_ap_shm->tail_array[pipe->pipe_nr]);
+       struct ipc_protocol_td *p_td;
+       struct sk_buff *skb;
+ 
+@@ -401,14 +399,6 @@ struct sk_buff *ipc_protocol_dl_td_proce
+               ipc_pcie_kfree_skb(ipc_protocol->pcie, skb);
+               skb = NULL;
+               goto ret;
+-      }
+-
+-      if (!IPC_CB(skb)) {
+-              dev_err(ipc_protocol->dev, "pipe# %d, tail: %d skb_cb is NULL",
+-                      pipe->pipe_nr, tail);
+-              ipc_pcie_kfree_skb(ipc_protocol->pcie, skb);
+-              skb = NULL;
+-              goto ret;
+       }
+ 
+       if (p_td->buffer.address != IPC_CB(skb)->mapping) {

diff --git a/queue-5.15/series b/queue-5.15/series
new file mode 100644 (file)
index 0000000..1ab8cad
--- /dev/null
+++ b/queue-5.15/series
@@ -0,0 +1 @@
+net-wwan-iosm-remove-pointless-null-check.patch