diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-08 07:33:46 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-08 07:33:46 -0800 |
| commit | 3c443cbc1dbb9a3b4dd9a134b97349195bcb4990 (patch) | |
| tree | 208594c4867cbdfa1616a6f6961334718c0e2c76 /drivers/char/hvc_iucv.c | |
| parent | d4014030d2b2508aaf54093a5885f1c8a2275dd7 (diff) | |
| parent | 1ffaa640c6ba135aafc91841204e41846eae6841 (diff) | |
Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] smsgiucv_app: deliver z/VM CP special messages (SMSG) as uevents
[S390] smsgiucv: declare char pointers as "const"
[S390] dasd: automatic recognition of read-only devices
[S390] remove unused qdio flags in zfcp and qeth
[S390] Cleanup xtime usage
[S390] qdio: add missing bracket
[S390] cio: fix init_count in case of recognition after steal lock
[S390] dasd: security and PSF update patch for EMC CKD ioctl
[S390] hvc_iucv: allocate memory buffers for IUCV in zone DMA
[S390] uaccess: make sure copy_from_user_overflow is builtin
Diffstat (limited to 'drivers/char/hvc_iucv.c')
| -rw-r--r-- | drivers/char/hvc_iucv.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/char/hvc_iucv.c b/drivers/char/hvc_iucv.c index 21681a81cc3..37b0542a4ee 100644 --- a/drivers/char/hvc_iucv.c +++ b/drivers/char/hvc_iucv.c @@ -139,6 +139,8 @@ struct hvc_iucv_private *hvc_iucv_get_private(uint32_t num) * * This function allocates a new struct iucv_tty_buffer element and, optionally, * allocates an internal data buffer with the specified size @size. + * The internal data buffer is always allocated with GFP_DMA which is + * required for receiving and sending data with IUCV. * Note: The total message size arises from the internal buffer size and the * members of the iucv_tty_msg structure. * The function returns NULL if memory allocation has failed. @@ -154,7 +156,7 @@ static struct iucv_tty_buffer *alloc_tty_buffer(size_t size, gfp_t flags) if (size > 0) { bufp->msg.length = MSG_SIZE(size); - bufp->mbuf = kmalloc(bufp->msg.length, flags); + bufp->mbuf = kmalloc(bufp->msg.length, flags | GFP_DMA); if (!bufp->mbuf) { mempool_free(bufp, hvc_iucv_mempool); return NULL; @@ -237,7 +239,7 @@ static int hvc_iucv_write(struct hvc_iucv_private *priv, if (!rb->mbuf) { /* message not yet received ... */ /* allocate mem to store msg data; if no memory is available * then leave the buffer on the list and re-try later */ - rb->mbuf = kmalloc(rb->msg.length, GFP_ATOMIC); + rb->mbuf = kmalloc(rb->msg.length, GFP_ATOMIC | GFP_DMA); if (!rb->mbuf) return -ENOMEM; |