[EXTERNAL] [PATCH v6 2/6] common/cnxk: replace variable length array

[Tejasree Kondoj]

Acked-by: Tejasree Kondoj <ktejasree at marvell.com>

From: Stephen Hemminger <stephen at networkplumber.org>
Sent: Thursday, February 5, 2026 11:26 PM
To: dev at dpdk.org
Cc: Stephen Hemminger <stephen at networkplumber.org>; Satha Koteswara Rao Kottidi <skoteshwar at marvell.com>; stable at dpdk.org; Nithin Kumar Dabilpuram <ndabilpuram at marvell.com>; Kiran Kumar Kokkilagadda <kirankumark at marvell.com>; Sunil Kumar Kori <skori at marvell.com>; Harman Kalra <hkalra at marvell.com>
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: skoteshwar at marvell.com<mailto:skoteshwar at marvell.com>

Cc: stable at dpdk.org<mailto:stable at dpdk.org>



Signed-off-by: Stephen Hemminger <stephen at networkplumber.org<mailto:stephen at networkplumber.org>>

---

 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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