From f5fff3602a67ff8c98fccdbf15959780be542802 Mon Sep 17 00:00:00 2001 From: Jon Smirl Date: Sun, 11 May 2008 20:37:04 +0200 Subject: [PATCH] i2c-mpc: Compare to NO_IRQ instead of zero Alter the mpc i2c driver to use the NO_IRQ symbol instead of the constant zero when checking for valid interrupts. NO_IRQ=-1 on ppc and NO_IRQ=0 on powerpc so the checks against zero are not correct. Signed-off-by: Jon Smirl Signed-off-by: Jean Delvare --- drivers/i2c/busses/i2c-mpc.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index 18beb0ad7b..a076129de7 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -99,7 +99,7 @@ static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing) u32 x; int result = 0; - if (i2c->irq == 0) + if (i2c->irq == NO_IRQ) { while (!(readb(i2c->base + MPC_I2C_SR) & CSR_MIF)) { schedule(); @@ -329,10 +329,9 @@ static int fsl_i2c_probe(struct platform_device *pdev) return -ENOMEM; i2c->irq = platform_get_irq(pdev, 0); - if (i2c->irq < 0) { - result = -ENXIO; - goto fail_get_irq; - } + if (i2c->irq < 0) + i2c->irq = NO_IRQ; /* Use polling */ + i2c->flags = pdata->device_flags; init_waitqueue_head(&i2c->queue); @@ -344,7 +343,7 @@ static int fsl_i2c_probe(struct platform_device *pdev) goto fail_map; } - if (i2c->irq != 0) + if (i2c->irq != NO_IRQ) if ((result = request_irq(i2c->irq, mpc_i2c_isr, IRQF_SHARED, "i2c-mpc", i2c)) < 0) { printk(KERN_ERR @@ -367,12 +366,11 @@ static int fsl_i2c_probe(struct platform_device *pdev) return result; fail_add: - if (i2c->irq != 0) + if (i2c->irq != NO_IRQ) free_irq(i2c->irq, i2c); fail_irq: iounmap(i2c->base); fail_map: - fail_get_irq: kfree(i2c); return result; }; @@ -384,7 +382,7 @@ static int fsl_i2c_remove(struct platform_device *pdev) i2c_del_adapter(&i2c->adap); platform_set_drvdata(pdev, NULL); - if (i2c->irq != 0) + if (i2c->irq != NO_IRQ) free_irq(i2c->irq, i2c); iounmap(i2c->base); -- 2.39.5