Re: [PATCH v4.4-rc8 6/7] isdn: eicon: diddfunc: Silence frame size warning

On 01/09/2016 01:05 AM, Tim Gardner wrote:

quoted

quoted

From: Tim Gardner <redacted>

drivers/isdn/hardware/eicon/diddfunc.c: In function 'connect_didd':
drivers/isdn/hardware/eicon/diddfunc.c:77:1: warning: the frame size
of 1152 bytes is larger than 1024 bytes [-Wframe-larger-than=]

gcc version 5.3.1 20151219 (Ubuntu 5.3.1-4ubuntu1)

Cc: Armin Schindler <redacted>
Cc: Karsten Keil <redacted>
Signed-off-by: Tim Gardner <redacted>
---
   drivers/isdn/hardware/eicon/diddfunc.c | 17 +++++++++++++----
   1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/isdn/hardware/eicon/diddfunc.c

b/drivers/isdn/hardware/eicon/diddfunc.c
index b0b23ed..a9feb4f 100644

--- a/drivers/isdn/hardware/eicon/diddfunc.c
+++ b/drivers/isdn/hardware/eicon/diddfunc.c

@@ -52,9 +52,13 @@ static int __init connect_didd(void)
       int x = 0;
       int dadapter = 0;
       IDI_SYNC_REQ req;
-    DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];
+    DESCRIPTOR *DIDD_Table;

-    DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));
+    DIDD_Table = kcalloc(MAX_DESCRIPTORS, sizeof(*DIDD_Table),

GFP_KERNEL);

   Previously the array didn't seem to be zeroed, perhaps it's better to
use kmalloc_array()?

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[...]

The last patch in the series (isdn: eicon: consolidate descriptor
allocation) consolidates the allocation code into one function. I used
kmalloc() there because I noticed that diva_didd_read_adapter_array()
does zero the buffer before using it.

Do you think that is sufficient ?

    If it worked before your patch, yes.

rtg

MBR, Sergei