Re: [PATCH][2.4.30] __attribute__ placement

[Vinay K Nallamothu <vinay.nallamothu@gsecone.com>]

Hi,

Realised few things are not ok with my earlier patch. The __attribute__
((packed)) problem exists only with typedefed structs. The correct
syntax is

typedef struct ... { .... } __attribute__((packed)) newtype;

Please find the updated patch. Hope I got it right this time.

Thanks
Vinay

 arch/s390x/kernel/ptrace.c  |    6 +++---
 drivers/net/gt96100eth.h    |    4 ++--
 drivers/s390/net/qeth.h     |    4 ++--
 drivers/s390/net/qeth_mpc.h |    6 +++---
 4 files changed, 10 insertions(+), 10 deletions(-)

==============================================================================
diff -urN linux-2.4.30/arch/s390x/kernel/ptrace.c linux-2.4.30-nvk/arch/s390x/kernel/ptrace.c
--- linux-2.4.30/arch/s390x/kernel/ptrace.c	2003-06-14 10:05:28.000000000 +0530
+++ linux-2.4.30-nvk/arch/s390x/kernel/ptrace.c	2005-04-20 15:29:35.000000000 +0530
@@ -146,14 +146,14 @@
 typedef struct
 {
 	__u32 cr[3];
-} per_cr_words32  __attribute__((packed));
+} __attribute__((packed)) per_cr_words32;
 
 typedef struct
 {
 	__u16          perc_atmid;          /* 0x096 */
 	__u32          address;             /* 0x098 */
 	__u8           access_id;           /* 0x0a1 */
-} per_lowcore_words32  __attribute__((packed));
+} __attribute__((packed)) per_lowcore_words32;
 
 typedef struct
 {
@@ -177,7 +177,7 @@
 	union {
 		per_lowcore_words32 words;
 	} lowcore; 
-} per_struct32 __attribute__((packed));
+} __attribute__((packed)) per_struct32;
 
 struct user_regs_struct32
 {
diff -urN linux-2.4.30/drivers/net/gt96100eth.h linux-2.4.30-nvk/drivers/net/gt96100eth.h
--- linux-2.4.30/drivers/net/gt96100eth.h	2003-06-14 10:03:16.000000000 +0530
+++ linux-2.4.30-nvk/drivers/net/gt96100eth.h	2005-04-20 15:34:14.000000000 +0530
@@ -214,7 +214,7 @@
 	u32 cmdstat;
 	u32 next;
 	u32 buff_ptr;
-} gt96100_td_t __attribute__ ((packed));
+} __attribute__ ((packed)) gt96100_td_t;
 
 typedef struct {
 #ifdef DESC_BE
@@ -227,7 +227,7 @@
 	u32 cmdstat;
 	u32 next;
 	u32 buff_ptr;
-} gt96100_rd_t __attribute__ ((packed));
+} __attribute__ ((packed)) gt96100_rd_t;
 
 
 /* Values for the Tx command-status descriptor entry. */
diff -urN linux-2.4.30/drivers/s390/net/qeth.h linux-2.4.30-nvk/drivers/s390/net/qeth.h
--- linux-2.4.30/drivers/s390/net/qeth.h	2004-12-04 17:45:26.000000000 +0530
+++ linux-2.4.30-nvk/drivers/s390/net/qeth.h	2005-04-20 15:31:52.000000000 +0530
@@ -760,14 +760,14 @@
 typedef struct qeth_ringbuffer_t {
 	qdio_buffer_t buffer[QDIO_MAX_BUFFERS_PER_Q];
 	qeth_ringbuffer_element_t ringbuf_element[QDIO_MAX_BUFFERS_PER_Q];
-} qeth_ringbuffer_t __attribute__ ((packed,aligned(PAGE_SIZE)));
+} __attribute__((packed)) qeth_ringbuffer_t __attribute__ ((aligned(PAGE_SIZE)));
 
 typedef struct qeth_dma_stuff_t {
 	unsigned char *sendbuf;
 	unsigned char *recbuf;
 	ccw1_t read_ccw;
 	ccw1_t write_ccw;
-} qeth_dma_stuff_t __attribute__ ((packed,aligned(PAGE_SIZE)));
+} __attribute__((packed)) qeth_dma_stuff_t __attribute__ ((aligned(PAGE_SIZE)));
 
 typedef struct qeth_perf_stats_t {
 	unsigned int skbs_rec;
diff -urN linux-2.4.30/drivers/s390/net/qeth_mpc.h linux-2.4.30-nvk/drivers/s390/net/qeth_mpc.h
--- linux-2.4.30/drivers/s390/net/qeth_mpc.h	2004-12-04 17:45:26.000000000 +0530
+++ linux-2.4.30-nvk/drivers/s390/net/qeth_mpc.h	2005-04-20 15:33:16.000000000 +0530
@@ -460,7 +460,7 @@
 			__u8 unique_id[8];
 		} create_destroy_addr;
 	} data;
-} ipa_cmd_t __attribute__ ((packed));
+} __attribute__ ((packed)) ipa_cmd_t;
 
 #define QETH_IOC_MAGIC 0x22
 #define QETH_IOCPROC_REGISTER _IOWR(QETH_IOC_MAGIC, 1, int)
@@ -506,7 +506,7 @@
 			__u8 snmp_data[ARP_DATA_SIZE];
 		} snmp_subcommand;
 	} data;
-} snmp_ipa_setadp_cmd_t __attribute__ ((packed));
+} __attribute__ ((packed)) snmp_ipa_setadp_cmd_t;
 
 typedef struct arp_cmd_t {
 	__u8 command;
@@ -539,7 +539,7 @@
 		} setassparms;
                 snmp_ipa_setadp_cmd_t setadapterparms; 
 	} data;
-} arp_cmd_t __attribute__ ((packed));
+} __attribute__ ((packed)) arp_cmd_t;
 
 
 

==============================================================================

On Mon, 2005-04-18 at 20:37 +0530, Vinay K Nallamothu wrote:
> Hi,
> 
> The variable attributes "packed" and "align" when used with structure
> should have the following order:
> 
> struct ... {...} __attribute__((packed)) var;
> 
> This patch fixes few instances where the variable and attributes are
> placed the other way around and had no affect.

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