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| author | Daniel Drake <dsd@gentoo.org> | 2008-02-20 13:29:05 +0000 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-02-22 09:08:13 -0600 |
| commit | 69e562c234440fb7410877b5b24f4b29ef8521d1 (patch) | |
| tree | b0db2e22c52d3e085eb5bbe4925e0d921267884d | |
| parent | ad008d42bcec99911b3270a8349f8ec8405a1c4e (diff) | |
| download | kernel_samsung_aries-69e562c234440fb7410877b5b24f4b29ef8521d1.zip kernel_samsung_aries-69e562c234440fb7410877b5b24f4b29ef8521d1.tar.gz kernel_samsung_aries-69e562c234440fb7410877b5b24f4b29ef8521d1.tar.bz2 | |
[SCSI] arcmsr: fix message allocation
arcmsr_iop_message_xfer() is called from atomic context under the
queuecommand scsi_host_template handler. James Bottomley pointed out
that the current GFP_KERNEL|GFP_DMA flags are wrong: firstly we are in
atomic context, secondly this memory is not used for DMA.
Also removed some unneeded casts.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Cc: Nick Cheng <nick.cheng@areca.com.tw>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| -rw-r--r-- | drivers/scsi/arcmsr/arcmsr_hba.c | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c index 4f9ff32..f91f79c 100644 --- a/drivers/scsi/arcmsr/arcmsr_hba.c +++ b/drivers/scsi/arcmsr/arcmsr_hba.c @@ -1387,18 +1387,16 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \ switch(controlcode) { case ARCMSR_MESSAGE_READ_RQBUFFER: { - unsigned long *ver_addr; + unsigned char *ver_addr; uint8_t *pQbuffer, *ptmpQbuffer; int32_t allxfer_len = 0; - void *tmp; - tmp = kmalloc(1032, GFP_KERNEL|GFP_DMA); - ver_addr = (unsigned long *)tmp; - if (!tmp) { + ver_addr = kmalloc(1032, GFP_ATOMIC); + if (!ver_addr) { retvalue = ARCMSR_MESSAGE_FAIL; goto message_out; } - ptmpQbuffer = (uint8_t *) ver_addr; + ptmpQbuffer = ver_addr; while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex) && (allxfer_len < 1031)) { pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex]; @@ -1427,26 +1425,24 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \ } arcmsr_iop_message_read(acb); } - memcpy(pcmdmessagefld->messagedatabuffer, (uint8_t *)ver_addr, allxfer_len); + memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len); pcmdmessagefld->cmdmessage.Length = allxfer_len; pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; - kfree(tmp); + kfree(ver_addr); } break; case ARCMSR_MESSAGE_WRITE_WQBUFFER: { - unsigned long *ver_addr; + unsigned char *ver_addr; int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex; uint8_t *pQbuffer, *ptmpuserbuffer; - void *tmp; - tmp = kmalloc(1032, GFP_KERNEL|GFP_DMA); - ver_addr = (unsigned long *)tmp; - if (!tmp) { + ver_addr = kmalloc(1032, GFP_ATOMIC); + if (!ver_addr) { retvalue = ARCMSR_MESSAGE_FAIL; goto message_out; } - ptmpuserbuffer = (uint8_t *)ver_addr; + ptmpuserbuffer = ver_addr; user_len = pcmdmessagefld->cmdmessage.Length; memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len); wqbuf_lastindex = acb->wqbuf_lastindex; @@ -1492,7 +1488,7 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \ retvalue = ARCMSR_MESSAGE_FAIL; } } - kfree(tmp); + kfree(ver_addr); } break; |