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Date: Mon, 24 Mar 2008 20:49:01 +0100 (CET)
From: Stefan Richter <stefanr@...6.in-berlin.de>
To: linux1394-devel@...ts.sourceforge.net
cc: linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] ieee1394: ohci1394: unroll a macro with return
We don't want to hide something like return in a preprocessor macro.
Unroll the macro and use a goto, which also reduces the size of
ohci1394.ko.
Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
---
drivers/ieee1394/ohci1394.c | 92 +++++++++++++++++++++---------------
1 file changed, 54 insertions(+), 38 deletions(-)
Index: linux/drivers/ieee1394/ohci1394.c
===================================================================
--- linux.orig/drivers/ieee1394/ohci1394.c
+++ linux/drivers/ieee1394/ohci1394.c
@@ -2984,13 +2984,6 @@ static struct hpsb_host_driver ohci1394_
* PCI Driver Interface functions *
***********************************/
-#define FAIL(err, fmt, args...) \
-do { \
- PRINT_G(KERN_ERR, fmt , ## args); \
- ohci1394_pci_remove(dev); \
- return err; \
-} while (0)
-
#ifdef CONFIG_PPC_PMAC
static void ohci1394_pmac_on(struct pci_dev *dev)
{
@@ -3026,15 +3019,21 @@ static int __devinit ohci1394_pci_probe(
struct hpsb_host *host;
struct ti_ohci *ohci; /* shortcut to currently handled device */
resource_size_t ohci_base;
+ int err = -ENOMEM;
ohci1394_pmac_on(dev);
- if (pci_enable_device(dev))
- FAIL(-ENXIO, "Failed to enable OHCI hardware");
+ if (pci_enable_device(dev)) {
+ PRINT_G(KERN_ERR, "Failed to enable OHCI hardware");
+ err = -ENXIO;
+ goto err;
+ }
pci_set_master(dev);
host = hpsb_alloc_host(&ohci1394_driver, sizeof(struct ti_ohci), &dev->dev);
- if (!host) FAIL(-ENOMEM, "Failed to allocate host structure");
-
+ if (!host) {
+ PRINT_G(KERN_ERR, "Failed to allocate host structure");
+ goto err;
+ }
ohci = host->hostdata;
ohci->dev = dev;
ohci->host = host;
@@ -3083,15 +3082,20 @@ static int __devinit ohci1394_pci_probe(
(unsigned long long)pci_resource_len(dev, 0));
if (!request_mem_region(ohci_base, OHCI1394_REGISTER_SIZE,
- OHCI1394_DRIVER_NAME))
- FAIL(-ENOMEM, "MMIO resource (0x%llx - 0x%llx) unavailable",
+ OHCI1394_DRIVER_NAME)) {
+ PRINT_G(KERN_ERR, "MMIO resource (0x%llx - 0x%llx) unavailable",
(unsigned long long)ohci_base,
(unsigned long long)ohci_base + OHCI1394_REGISTER_SIZE);
+ goto err;
+ }
ohci->init_state = OHCI_INIT_HAVE_MEM_REGION;
ohci->registers = ioremap(ohci_base, OHCI1394_REGISTER_SIZE);
- if (ohci->registers == NULL)
- FAIL(-ENXIO, "Failed to remap registers - card not accessible");
+ if (ohci->registers == NULL) {
+ PRINT_G(KERN_ERR, "Failed to remap registers");
+ err = -ENXIO;
+ goto err;
+ }
ohci->init_state = OHCI_INIT_HAVE_IOMAPPING;
DBGMSG("Remapped memory spaces reg 0x%p", ohci->registers);
@@ -3099,16 +3103,20 @@ static int __devinit ohci1394_pci_probe(
ohci->csr_config_rom_cpu =
pci_alloc_consistent(ohci->dev, OHCI_CONFIG_ROM_LEN,
&ohci->csr_config_rom_bus);
- if (ohci->csr_config_rom_cpu == NULL)
- FAIL(-ENOMEM, "Failed to allocate buffer config rom");
+ if (ohci->csr_config_rom_cpu == NULL) {
+ PRINT_G(KERN_ERR, "Failed to allocate buffer config rom");
+ goto err;
+ }
ohci->init_state = OHCI_INIT_HAVE_CONFIG_ROM_BUFFER;
/* self-id dma buffer allocation */
ohci->selfid_buf_cpu =
pci_alloc_consistent(ohci->dev, OHCI1394_SI_DMA_BUF_SIZE,
&ohci->selfid_buf_bus);
- if (ohci->selfid_buf_cpu == NULL)
- FAIL(-ENOMEM, "Failed to allocate DMA buffer for self-id packets");
+ if (ohci->selfid_buf_cpu == NULL) {
+ PRINT_G(KERN_ERR, "Failed to allocate self-ID buffer");
+ goto err;
+ }
ohci->init_state = OHCI_INIT_HAVE_SELFID_BUFFER;
if ((unsigned long)ohci->selfid_buf_cpu & 0x1fff)
@@ -3124,28 +3132,32 @@ static int __devinit ohci1394_pci_probe(
if (alloc_dma_rcv_ctx(ohci, &ohci->ar_req_context,
DMA_CTX_ASYNC_REQ, 0, AR_REQ_NUM_DESC,
AR_REQ_BUF_SIZE, AR_REQ_SPLIT_BUF_SIZE,
- OHCI1394_AsReqRcvContextBase) < 0)
- FAIL(-ENOMEM, "Failed to allocate AR Req context");
-
+ OHCI1394_AsReqRcvContextBase) < 0) {
+ PRINT_G(KERN_ERR, "Failed to allocate AR Req context");
+ goto err;
+ }
/* AR DMA response context allocation */
if (alloc_dma_rcv_ctx(ohci, &ohci->ar_resp_context,
DMA_CTX_ASYNC_RESP, 0, AR_RESP_NUM_DESC,
AR_RESP_BUF_SIZE, AR_RESP_SPLIT_BUF_SIZE,
- OHCI1394_AsRspRcvContextBase) < 0)
- FAIL(-ENOMEM, "Failed to allocate AR Resp context");
-
+ OHCI1394_AsRspRcvContextBase) < 0) {
+ PRINT_G(KERN_ERR, "Failed to allocate AR Resp context");
+ goto err;
+ }
/* AT DMA request context */
if (alloc_dma_trm_ctx(ohci, &ohci->at_req_context,
DMA_CTX_ASYNC_REQ, 0, AT_REQ_NUM_DESC,
- OHCI1394_AsReqTrContextBase) < 0)
- FAIL(-ENOMEM, "Failed to allocate AT Req context");
-
+ OHCI1394_AsReqTrContextBase) < 0) {
+ PRINT_G(KERN_ERR, "Failed to allocate AT Req context");
+ goto err;
+ }
/* AT DMA response context */
if (alloc_dma_trm_ctx(ohci, &ohci->at_resp_context,
DMA_CTX_ASYNC_RESP, 1, AT_RESP_NUM_DESC,
- OHCI1394_AsRspTrContextBase) < 0)
- FAIL(-ENOMEM, "Failed to allocate AT Resp context");
-
+ OHCI1394_AsRspTrContextBase) < 0) {
+ PRINT_G(KERN_ERR, "Failed to allocate AT Resp context");
+ goto err;
+ }
/* Start off with a soft reset, to clear everything to a sane
* state. */
ohci_soft_reset(ohci);
@@ -3188,9 +3200,10 @@ static int __devinit ohci1394_pci_probe(
* by that point.
*/
if (request_irq(dev->irq, ohci_irq_handler, IRQF_SHARED,
- OHCI1394_DRIVER_NAME, ohci))
- FAIL(-ENOMEM, "Failed to allocate shared interrupt %d", dev->irq);
-
+ OHCI1394_DRIVER_NAME, ohci)) {
+ PRINT_G(KERN_ERR, "Failed to allocate interrupt %d", dev->irq);
+ goto err;
+ }
ohci->init_state = OHCI_INIT_HAVE_IRQ;
ohci_initialize(ohci);
@@ -3210,13 +3223,16 @@ static int __devinit ohci1394_pci_probe(
host->middle_addr_space = OHCI1394_MIDDLE_ADDRESS_SPACE;
/* Tell the highlevel this host is ready */
- if (hpsb_add_host(host))
- FAIL(-ENOMEM, "Failed to register host with highlevel");
-
+ if (hpsb_add_host(host)) {
+ PRINT_G(KERN_ERR, "Failed to register host with highlevel");
+ goto err;
+ }
ohci->init_state = OHCI_INIT_DONE;
return 0;
-#undef FAIL
+err:
+ ohci1394_pci_remove(dev);
+ return err;
}
static void ohci1394_pci_remove(struct pci_dev *dev)
--
Stefan Richter
-=====-==--- --== ==---
http://arcgraph.de/sr/
--
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