diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2015-10-14 16:46:52 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2015-10-15 12:03:00 -0400 |
| commit | eb351031a15c4a83b9955aadad783c6672ab8868 (patch) | |
| tree | e0adbd017457348e2353699a498d2ae9b2a4788e /drivers/ata/ahci_qoriq.c | |
| parent | 3a53b3bcc7af2f7ddfb682cb8efb26e40fe50fb1 (diff) | |
| download | lwn-eb351031a15c4a83b9955aadad783c6672ab8868.tar.gz lwn-eb351031a15c4a83b9955aadad783c6672ab8868.zip | |
ahci: qoriq: Fix a compiling warning
kbuild test robot reports the warnings:
drivers/ata/ahci_qoriq.c: In function 'ahci_qoriq_hardreset':
>> include/asm-generic/io.h:163:2: warning: 'px_is' may be used
>> uninitialized in this function [-Wuninitialized]
drivers/ata/ahci_qoriq.c:70:14: note: 'px_is' was declared here
>> include/asm-generic/io.h:163:2: warning: 'px_cmd' may be used
>> uninitialized in this function [-Wuninitialized]
drivers/ata/ahci_qoriq.c:70:6: note: 'px_cmd' was declared here
This patch fixed it by introducing a local variable.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata/ahci_qoriq.c')
| -rw-r--r-- | drivers/ata/ahci_qoriq.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/ata/ahci_qoriq.c b/drivers/ata/ahci_qoriq.c index e5e498812554..58c1a94b9a41 100644 --- a/drivers/ata/ahci_qoriq.c +++ b/drivers/ata/ahci_qoriq.c @@ -76,6 +76,7 @@ static int ahci_qoriq_hardreset(struct ata_link *link, unsigned int *class, struct ata_taskfile tf; bool online; int rc; + bool ls1021a_workaround = (qoriq_priv->type == AHCI_LS1021A); DPRINTK("ENTER\n"); @@ -92,7 +93,7 @@ static int ahci_qoriq_hardreset(struct ata_link *link, unsigned int *class, * After the sequence is complete, software should restore the * PxCMD and PxIS with the stored values. */ - if (qoriq_priv->type == AHCI_LS1021A) { + if (ls1021a_workaround) { px_cmd = readl(port_mmio + PORT_CMD); px_is = readl(port_mmio + PORT_IRQ_STAT); } @@ -106,7 +107,7 @@ static int ahci_qoriq_hardreset(struct ata_link *link, unsigned int *class, ahci_check_ready); /* restore the PxCMD and PxIS on ls1021 */ - if (qoriq_priv->type == AHCI_LS1021A) { + if (ls1021a_workaround) { px_val = readl(port_mmio + PORT_CMD); if (px_val != px_cmd) writel(px_cmd, port_mmio + PORT_CMD); |