Acked-by: Tejasree Kondoj <[email protected]>

From: Stephen Hemminger <[email protected]>
Sent: Thursday, February 5, 2026 11:26 PM
To: [email protected]
Cc: Stephen Hemminger <[email protected]>; Satha Koteswara Rao Kottidi 
<[email protected]>; [email protected]; Nithin Kumar Dabilpuram 
<[email protected]>; Kiran Kumar Kokkilagadda <[email protected]>; 
Sunil Kumar Kori <[email protected]>; Harman Kalra <[email protected]>
Subject: [EXTERNAL] [PATCH v6 2/6] common/cnxk: replace variable length array

This fixes errors when compiled with LTO about large VLA. .. 
/drivers/common/cnxk/roc_platform. c: In function ‘irq_init’: .. 
/drivers/common/cnxk/roc_platform. c: 92: 14: warning: argument to 
variable-length array is too large [-Wvla-larger-than=]
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This fixes errors when compiled with LTO about large VLA.

../drivers/common/cnxk/roc_platform.c: In function ‘irq_init’:

../drivers/common/cnxk/roc_platform.c:92:14: warning: argument to 
variable-length array is too large [-Wvla-larger-than=]

   92 |         char irq_set_buf[MSIX_IRQ_SET_BUF_LEN];

      |              ^



Since the number of IRQ is limited by EAL max interrupt vectors

use that define that already exists rather than a function call

hidden in a macro.



Bugzilla ID: 1863

Fixes: 375cb1601882 ("common/cnxk: move interrupt handling to 
platform-specific")

Cc: [email protected]<mailto:[email protected]>

Cc: [email protected]<mailto:[email protected]>



Signed-off-by: Stephen Hemminger 
<[email protected]<mailto:[email protected]>>

---

 drivers/common/cnxk/roc_platform.c | 4 ++--

 1 file changed, 2 insertions(+), 2 deletions(-)



diff --git a/drivers/common/cnxk/roc_platform.c 
b/drivers/common/cnxk/roc_platform.c

index e13cb42285..1fdbf8f051 100644

--- a/drivers/common/cnxk/roc_platform.c

+++ b/drivers/common/cnxk/roc_platform.c

@@ -17,8 +17,8 @@

 #include <sys/ioctl.h>

 #include <unistd.h>



-#define MSIX_IRQ_SET_BUF_LEN                                                   
                    \

-          (sizeof(struct vfio_irq_set) + sizeof(int) * 
(plt_intr_max_intr_get(intr_handle)))

+#define MSIX_IRQ_SET_BUF_LEN                                                   
                                  \

+          (sizeof(struct vfio_irq_set) + sizeof(int) * 
PLT_MAX_RXTX_INTR_VEC_ID)



 static int

 irq_get_info(struct plt_intr_handle *intr_handle)

--

2.51.0


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