Quoting Felipe Balbi <[email protected]>:
Content-Description: tahvo-correctness.patch
@@ -683,11 +682,23 @@ static int tahvo_usb_probe(struct
platform_device *pdev)
/* Attributes */
ret = device_create_file(&(pdev->dev), &dev_attr_vbus_state);
+ if (ret) {
+ tahvo_free_irq(TAHVO_INT_VBUSON);
+ kfree(tu);
+ printk(KERN_ERR "attribute creation failed: %d\n", ret);
use dev_dbg(&pdev->dev, "...");
@@ -703,8 +714,12 @@ static int tahvo_usb_probe(struct
platform_device *pdev)
ret = otg_set_transceiver(&tu->otg);
if (ret < 0) {
printk(KERN_ERR "Cannot register USB transceiver\n");
- kfree(tu);
tahvo_free_irq(TAHVO_INT_VBUSON);
+ device_remove_file(&(pdev->dev), &dev_attr_vbus_state);
+#ifdef CONFIG_USB_OTG
+ device_remove_file(&(pdev->dev), &dev_attr_otg_mode);
+#endif
+ kfree(tu);
return ret;
}
@@ -718,6 +733,7 @@ static int tahvo_usb_probe(struct platform_device *pdev)
static int tahvo_usb_remove(struct platform_device *pdev)
{
+ struct tahvo_usb *tu = (struct tahvo_usb*) pdev->dev.driver_data;
tu = platform_get_drvdata(pdev);
diff --git a/drivers/cbus/tahvo.c b/drivers/cbus/tahvo.c
index 29fd4b8..09a69c0 100644
--- a/drivers/cbus/tahvo.c
+++ b/drivers/cbus/tahvo.c
@@ -298,6 +298,7 @@ static int __devinit tahvo_probe(struct
platform_device *pdev)
em_asic_config = omap_get_config(OMAP_TAG_EM_ASIC_BB5,
struct omap_em_asic_bb5_config);
if (em_asic_config == NULL) {
+ tasklet_kill(&tahvo_tasklet);
printk(KERN_ERR PFX "Unable to retrieve config data\n");
return -ENODATA;
}
@@ -314,6 +315,7 @@ static int __devinit tahvo_probe(struct
platform_device *pdev)
tahvo_is_betty = 1;
tahvo_7bit_backlight = 1;
} else {
+ tasklet_kill(&tahvo_tasklet);
printk(KERN_ERR "Tahvo/Betty chip not found");
return -ENODEV;
}
@@ -324,6 +326,7 @@ static int __devinit tahvo_probe(struct
platform_device *pdev)
tahvo_irq_pin = em_asic_config->tahvo_irq_gpio;
if ((ret = gpio_request(tahvo_irq_pin, "TAHVO irq")) < 0) {
+ tasklet_kill(&tahvo_tasklet);
printk(KERN_ERR PFX "Unable to reserve IRQ GPIO\n");
return ret;
}
@@ -342,6 +345,7 @@ static int __devinit tahvo_probe(struct
platform_device *pdev)
if (ret < 0) {
printk(KERN_ERR PFX "Unable to register IRQ handler\n");
gpio_free(tahvo_irq_pin);
+ tasklet_kill(&tahvo_tasklet);
return ret;
}
#ifdef CONFIG_CBUS_TAHVO_USER
@@ -350,6 +354,7 @@ static int __devinit tahvo_probe(struct
platform_device *pdev)
printk(KERN_ERR "Unable to initialize driver\n");
free_irq(gpio_to_irq(tahvo_irq_pin), 0);
gpio_free(tahvo_irq_pin);
+ tasklet_kill(&tahvo_tasklet);
return ret;
}
#endif
I would like to see this as a series of goto like:
if (em_asic_config == NULL) {
ret = -ENODATA;
goto fail1;
}
...
ret = gpio_request(tahvo_irq_pin, "TAHVO irq");
if (ret < 0) {
...
goto failN;
}
failN:
...
...
fail2:
tasklet_kill(&tahvo_tasklet);
fail1:
return ret;
Hi - the current phase I'm in of this development is to simply get the
thing working reliably again; that includes cleanup etc as appropriate.
Once that is complete, i want to go back and refactor all the drivers
s that they do exactly what you suggest above, as well as using the
latest kernel APIs, modularisation where appropriate etc, with a view
to being suitable for mainline (even if they are not actually
submitted to mainline).
I don't want to do both at once because I feel that is too big a step
for this older slightly unmaintained code. Is it acceptable to you to
commit this patch in the interim?
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