FAILED: patch "[PATCH] PCI: dwc: Fix a 64bit bug in dw_pcie_ep_raise_msix_irq()" failed to apply to 6.1-stable tree

The patch below does not apply to the 6.1-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y
git checkout FETCH_HEAD
git cherry-pick -x b5d1b4b46f856da1473c7ba9a5cdfcb55c9b2478
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2024021946-sprain-turmoil-2ff2@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..

Possible dependencies:

b5d1b4b46f85 ("PCI: dwc: Fix a 64bit bug in dw_pcie_ep_raise_msix_irq()") 2217fffcd63f ("PCI: dwc: endpoint: Fix dw_pcie_ep_raise_msix_irq() alignment support") 92af77ca26f7 ("PCI: dwc: Use FIELD_GET/PREP()")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b5d1b4b46f856da1473c7ba9a5cdfcb55c9b2478 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <[email protected]>
Date: Fri, 26 Jan 2024 11:40:37 +0300
Subject: [PATCH] PCI: dwc: Fix a 64bit bug in dw_pcie_ep_raise_msix_irq()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The "msg_addr" variable is u64. However, the "aligned_offset" is an unsigned int. This means that when the code does:

  msg_addr &= ~aligned_offset;

it will unintentionally zero out the high 32 bits. Use ALIGN_DOWN() to do the alignment instead.

index 5befed2dc02b..d6b66597101e 100644
@@ -6,6 +6,7 @@
  * Author: Kishon Vijay Abraham I <[email protected]>
  */
 
+#include <linux/align.h>
 #include <linux/bitfield.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>

@@ -551,7 +552,7 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
 	}
 
 	aligned_offset = msg_addr & (epc->mem->window.page_size - 1);
-	msg_addr &= ~aligned_offset;
+	msg_addr = ALIGN_DOWN(msg_addr, epc->mem->window.page_size);
 	ret = dw_pcie_ep_map_addr(epc, func_no, 0, ep->msi_mem_phys, msg_addr,
 				  epc->mem->window.page_size);
 	if (ret)