From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: [patch 24/34] qdio: dont cast function pointers and use them to call functions.
Date: Thu, 04 Oct 2007 13:27:30 +0200 [thread overview]
Message-ID: <20071004112831.176824054@de.ibm.com> (raw)
In-Reply-To: 20071004112706.574737175@de.ibm.com
[-- Attachment #1: 024-qdio-casts.diff --]
[-- Type: text/plain, Size: 3085 bytes --]
From: Heiko Carstens <heiko.carstens@de.ibm.com>
According to C99 6.3.2.3 it's undefined what happens if a converted
pointer is used to call a function whose type is not compatible with
the pointed-to type.
That's what the qdio code is doing, so fix it.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
drivers/s390/cio/qdio.c | 37 +++++++++++++++++++------------------
1 file changed, 19 insertions(+), 18 deletions(-)
Index: quilt-2.6/drivers/s390/cio/qdio.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/qdio.c
+++ quilt-2.6/drivers/s390/cio/qdio.c
@@ -1024,9 +1024,9 @@ __qdio_outbound_processing(struct qdio_q
}
static void
-qdio_outbound_processing(struct qdio_q *q)
+qdio_outbound_processing(unsigned long q)
{
- __qdio_outbound_processing(q);
+ __qdio_outbound_processing((struct qdio_q *) q);
}
/************************* INBOUND ROUTINES *******************************/
@@ -1449,9 +1449,10 @@ out:
}
static void
-tiqdio_inbound_processing(struct qdio_q *q)
+tiqdio_inbound_processing(unsigned long q)
{
- __tiqdio_inbound_processing(q, atomic_read(&spare_indicator_usecount));
+ __tiqdio_inbound_processing((struct qdio_q *) q,
+ atomic_read(&spare_indicator_usecount));
}
static void
@@ -1494,9 +1495,9 @@ again:
}
static void
-qdio_inbound_processing(struct qdio_q *q)
+qdio_inbound_processing(unsigned long q)
{
- __qdio_inbound_processing(q);
+ __qdio_inbound_processing((struct qdio_q *) q);
}
/************************* MAIN ROUTINES *******************************/
@@ -1760,12 +1761,15 @@ qdio_fill_qs(struct qdio_irq *irq_ptr, s
q->handler=input_handler;
q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind;
- q->tasklet.data=(unsigned long)q;
/* q->is_thinint_q isn't valid at this time, but
- * irq_ptr->is_thinint_irq is */
- q->tasklet.func=(void(*)(unsigned long))
- ((irq_ptr->is_thinint_irq)?&tiqdio_inbound_processing:
- &qdio_inbound_processing);
+ * irq_ptr->is_thinint_irq is
+ */
+ if (irq_ptr->is_thinint_irq)
+ tasklet_init(&q->tasklet, tiqdio_inbound_processing,
+ (unsigned long) q);
+ else
+ tasklet_init(&q->tasklet, qdio_inbound_processing,
+ (unsigned long) q);
/* actually this is not used for inbound queues. yet. */
atomic_set(&q->busy_siga_counter,0);
@@ -1836,13 +1840,10 @@ qdio_fill_qs(struct qdio_irq *irq_ptr, s
q->last_move_ftc=0;
q->handler=output_handler;
- q->tasklet.data=(unsigned long)q;
- q->tasklet.func=(void(*)(unsigned long))
- &qdio_outbound_processing;
- q->timer.function=(void(*)(unsigned long))
- &qdio_outbound_processing;
- q->timer.data = (long)q;
- init_timer(&q->timer);
+ tasklet_init(&q->tasklet, qdio_outbound_processing,
+ (unsigned long) q);
+ setup_timer(&q->timer, qdio_outbound_processing,
+ (unsigned long) q);
atomic_set(&q->busy_siga_counter,0);
q->timing.busy_start=0;
--
blue skies,
Martin.
"Reality continues to ruin my life." - Calvin.
next prev parent reply other threads:[~2007-10-04 11:39 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-04 11:27 [patch 00/34] s390 patches for 2.6.24 Martin Schwidefsky
2007-10-04 11:27 ` [patch 01/34] cio: rename css to channel_subsystems Martin Schwidefsky
2007-10-04 11:27 ` [patch 02/34] cio: remove subchannel_add_files() Martin Schwidefsky
2007-10-04 11:27 ` [patch 03/34] cio: Fix some coding style issues in cmf Martin Schwidefsky
2007-10-04 11:27 ` [patch 04/34] cio: Kerneldoc comments for cmf Martin Schwidefsky
2007-10-04 11:27 ` [patch 05/34] cio: Add docbook comments Martin Schwidefsky
2007-10-04 11:27 ` [patch 06/34] cio: Add s390-drivers book Martin Schwidefsky
2007-10-04 11:27 ` [patch 07/34] cio: Minor style fixes Martin Schwidefsky
2007-10-04 11:27 ` [patch 08/34] cio: Disable channel path measurements on shutdown/reboot Martin Schwidefsky
2007-10-04 11:27 ` [patch 09/34] cio: Introduce ccw_bus_type.shutdown Martin Schwidefsky
2007-10-04 11:27 ` [patch 10/34] cio: Disable channel measurements (cmf) on shutdown/reboot Martin Schwidefsky
2007-10-04 11:27 ` [patch 11/34] cio: Fix device attributes for early devices Martin Schwidefsky
2007-10-04 11:27 ` [patch 12/34] Add Documentation/s390/00-INDEX Martin Schwidefsky
2007-10-04 11:27 ` [patch 13/34] cio: Documentation update Martin Schwidefsky
2007-10-04 11:27 ` [patch 14/34] zcrypt: make init/exit functions static Martin Schwidefsky
2007-10-04 11:27 ` [patch 15/34] zcrypt: remove duplicated struct CPRBX definition Martin Schwidefsky
2007-10-04 11:27 ` [patch 16/34] zcrypt: fix ap_reset_domain() Martin Schwidefsky
2007-10-04 11:27 ` [patch 17/34] appldata_base: Misc cpuinit annotations and bugfix Martin Schwidefsky
2007-10-04 11:27 ` [patch 18/34] appldata_base: Remove module_exit function and modular stuff Martin Schwidefsky
2007-10-04 11:27 ` [patch 19/34] disassembler: fix output for insns with 6 operands Martin Schwidefsky
2007-10-04 11:27 ` [patch 20/34] disassembler: Remove redundant variable assignment Martin Schwidefsky
2007-10-04 11:27 ` [patch 21/34] Get rid of a bunch of sparse warnings again Martin Schwidefsky
2007-10-04 11:27 ` [patch 22/34] remove packed attribute from ext_int_info_t Martin Schwidefsky
2007-10-04 11:27 ` [patch 23/34] Get rid of ARCH_KMALLOC_MINALIGN Martin Schwidefsky
2007-10-04 11:27 ` Martin Schwidefsky [this message]
2007-10-04 11:27 ` [patch 25/34] is_power_of_2 in drivers/s390/block/dasd_int.h Martin Schwidefsky
2007-10-04 11:27 ` [patch 26/34] qdio: change QDIO performance_stats error message priority Martin Schwidefsky
2007-10-04 11:27 ` [patch 27/34] Force link error if xchg/cmpxchg gets called with unsupported size Martin Schwidefsky
2007-10-04 11:27 ` [patch 28/34] Use IPL CLEAR for reipl under z/VM Martin Schwidefsky
2007-10-04 11:27 ` [patch 29/34] Remove obsolete recommendation for 8M ramdisk size Martin Schwidefsky
2007-10-04 11:27 ` [patch 30/34] zcore: fix inline assembly in memcpy_real() Martin Schwidefsky
2007-10-04 11:27 ` [patch 31/34] Make vmalloc area start at address > 4GB Martin Schwidefsky
2007-10-04 11:27 ` [patch 32/34] cpcmd: fix inline assembly usage Martin Schwidefsky
2007-10-04 11:27 ` [patch 33/34] tape: Fix medium state handling Martin Schwidefsky
2007-10-04 11:27 ` [patch 34/34] vmwatchdog: fix broken inline assembly Martin Schwidefsky
2007-10-04 19:10 ` [patch 00/34] s390 patches for 2.6.24 Sam Ravnborg
2007-10-05 8:30 ` Martin Schwidefsky
2007-10-04 19:15 ` [PATCH 1/2] s390: beautify vmlinux.lds Sam Ravnborg
2007-10-04 19:18 ` [PATCH 2/2] s390: use PAGE_SIZE in vmlinux.lds Sam Ravnborg
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