Ulf Hansson <ulf.hansson@xxxxxxxxxx> writes: > On 3 February 2016 at 23:19, Robert Jarzmik <robert.jarzmik@xxxxxxx> wrote: >> When the gpio driver is probed after the mmc one, the read/write gpio >> and card detection one return -EPROBE_DEFER. Unfortunately, the memory >> region remains requested, and upon the next probe, the probe will fail >> anyway with -EBUSY. >> >> Fix this by releasing the memory resource upon probe failure. >> >> Signed-off-by: Robert Jarzmik <robert.jarzmik@xxxxxxx> >> --- >> drivers/mmc/host/pxamci.c | 3 +-- >> 1 file changed, 1 insertion(+), 2 deletions(-) >> >> diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c >> index 28a057fae0a1..405ec339a1b8 100644 >> --- a/drivers/mmc/host/pxamci.c >> +++ b/drivers/mmc/host/pxamci.c >> @@ -657,7 +657,7 @@ static int pxamci_probe(struct platform_device *pdev) >> if (!r || irq < 0) >> return -ENXIO; >> >> - r = request_mem_region(r->start, SZ_4K, DRIVER_NAME); >> + r = devm_request_mem_region(&pdev->dev, r->start, SZ_4K, DRIVER_NAME); > > I suggest you replace also the ioremap call, thus using > devm_ioremap_resource() is convenient. Yes, of course, for v2. >> @@ -840,7 +840,6 @@ out: >> } >> if (mmc) >> mmc_free_host(mmc); >> - release_resource(r); > > This looks wrong. Hum. Why so ? > Perhaps it's just easier to convert the probe function to use all > devm_* functions, as for example irqs isn't freed either. You're very right. Actually the first patch I had was with devm_irq_request(), and then I reverted that chunk, thinking I was overdoing it, and that this didn't belong to this commit. Silly me, hein ? > In that way, you will solve all problems of also leaking memory in one go. Sure. Cheers. -- Robert -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
