From 7f02d56e54f2a8afaa01974df650ace9dc15d0cd Mon Sep 17 00:00:00 2001 From: Sylvain Munaut Date: Wed, 18 May 2005 19:39:57 +0200 Subject: [PATCH] i2c: Race fix for i2c-mpc.c i2c: Race fix for i2c-mpc.c The problem was that the clock speed and driver data is initialized after the i2c adapter was added. This caused the i2c bus to start working at a wrong speed. (Mostly noticable on the second bus on mpc5200) With this patch we've tried to keep the i2c adapter working perfectly all the time it is included in the system. Initialize before added, Remove garbage after deleleted. Submitted-by: Asier Llano Palacios Signed-off-by: Sylvain Munaut Signed-off-by: Kumar Gala Signed-off-by: Greg Kroah-Hartman --- drivers/i2c/busses/i2c-mpc.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers/i2c') diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index c8a8703dcbc..d41ca31dbcb 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -333,6 +333,9 @@ static int __devinit mpc_i2c_probe(struct ocp_device *ocp) } else i2c->irq = 0; + mpc_i2c_setclock(i2c); + ocp_set_drvdata(ocp, i2c); + i2c->adap = mpc_ops; i2c_set_adapdata(&i2c->adap, i2c); @@ -341,8 +344,6 @@ static int __devinit mpc_i2c_probe(struct ocp_device *ocp) goto fail_add; } - mpc_i2c_setclock(i2c); - ocp_set_drvdata(ocp, i2c); return result; fail_add: @@ -358,8 +359,8 @@ static int __devinit mpc_i2c_probe(struct ocp_device *ocp) static void __devexit mpc_i2c_remove(struct ocp_device *ocp) { struct mpc_i2c *i2c = ocp_get_drvdata(ocp); - ocp_set_drvdata(ocp, NULL); i2c_del_adapter(&i2c->adap); + ocp_set_drvdata(ocp, NULL); if (ocp->def->irq != OCP_IRQ_NA) free_irq(i2c->irq, i2c); @@ -430,6 +431,9 @@ static int fsl_i2c_probe(struct device *device) goto fail_irq; } + mpc_i2c_setclock(i2c); + dev_set_drvdata(device, i2c); + i2c->adap = mpc_ops; i2c_set_adapdata(&i2c->adap, i2c); i2c->adap.dev.parent = &pdev->dev; @@ -438,8 +442,6 @@ static int fsl_i2c_probe(struct device *device) goto fail_add; } - mpc_i2c_setclock(i2c); - dev_set_drvdata(device, i2c); return result; fail_add: @@ -456,8 +458,8 @@ static int fsl_i2c_remove(struct device *device) { struct mpc_i2c *i2c = dev_get_drvdata(device); - dev_set_drvdata(device, NULL); i2c_del_adapter(&i2c->adap); + dev_set_drvdata(device, NULL); if (i2c->irq != 0) free_irq(i2c->irq, i2c); -- cgit v1.2.3