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authorJan Glauber <jang@linux.vnet.ibm.com>2010-05-17 12:00:16 +0400
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2010-05-17 12:00:17 +0400
commit5382fe11d90e3ed9602ce655e523852e3dbf3e35 (patch)
tree0fa08681940ae976563eb1e5480a8568a1c762e7 /drivers/s390/cio
parentf3eb20fafdc10aea0fb13b113ac3b9a3dc9a5dc6 (diff)
downloadlinux-5382fe11d90e3ed9602ce655e523852e3dbf3e35.tar.xz
[S390] qdio: remove memset hack
Remove memset hack that relied on the layout of struct qdio_q to avoid deletion of the slib pointer. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio')
-rw-r--r--drivers/s390/cio/qdio.h6
-rw-r--r--drivers/s390/cio/qdio_setup.c8
2 files changed, 7 insertions, 7 deletions
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 48aa0647432b..da80e9b95e45 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -296,10 +296,8 @@ struct qdio_q {
struct qdio_irq *irq_ptr;
struct sl *sl;
/*
- * Warning: Leave this member at the end so it won't be cleared in
- * qdio_fill_qs. A page is allocated under this pointer and used for
- * slib and sl. slib is 2048 bytes big and sl points to offset
- * PAGE_SIZE / 2.
+ * A page is allocated under this pointer and used for slib and sl.
+ * slib is 2048 bytes big and sl points to offset PAGE_SIZE / 2.
*/
struct slib *slib;
} __attribute__ ((aligned(256)));
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 7f4a75465140..6326b67c45d2 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -106,10 +106,12 @@ int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs
static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr,
qdio_handler_t *handler, int i)
{
- /* must be cleared by every qdio_establish */
- memset(q, 0, ((char *)&q->slib) - ((char *)q));
- memset(q->slib, 0, PAGE_SIZE);
+ struct slib *slib = q->slib;
+ /* queue must be cleared for qdio_establish */
+ memset(q, 0, sizeof(*q));
+ memset(slib, 0, PAGE_SIZE);
+ q->slib = slib;
q->irq_ptr = irq_ptr;
q->mask = 1 << (31 - i);
q->nr = i;