On 07/04/14 13:16, Ben Dooks wrote:
On 07/04/14 13:09, Mike Looijmans wrote:
On 04/07/2014 10:11 AM, Arnd Bergmann wrote:
On Monday 07 April 2014 08:38:28 Mike Looijmans wrote:
index 34aef81..43b90c1 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2972,6 +2972,8 @@ int sdhci_add_host(struct sdhci_host *host)
host->vqmmc = regulator_get_optional(mmc_dev(mmc), "vqmmc");
if (IS_ERR_OR_NULL(host->vqmmc)) {
if (PTR_ERR(host->vqmmc) < 0) {
+ if (PTR_ERR(host->vqmmc) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
pr_info("%s: no vqmmc regulator found\n",
mmc_hostname(mmc));
host->vqmmc = NULL;
@@ -3048,8 +3050,10 @@ int sdhci_add_host(struct sdhci_host *host)
host->vmmc = regulator_get_optional(mmc_dev(mmc), "vmmc");
if (IS_ERR_OR_NULL(host->vmmc)) {
if (PTR_ERR(host->vmmc) < 0) {
- pr_info("%s: no vmmc regulator found\n",
- mmc_hostname(mmc));
+ if (PTR_ERR(host->vmmc) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ pr_info("%s: no vmmc regulator found (%d)\n",
+ mmc_hostname(mmc),
PTR_ERR(host->vmmc));
host->vmmc = NULL;
}
Please change the code to not use IS_ERR_OR_NULL() instead, getting
a NULL return value from regulator_get_optional() should not be
considered a bug, while getting an error return should always
cause the probe function to fail.
Surely it needs to be changed to IS_ERR(), nor IS_ERR_OR_NULL()?
And by that, I mean the use of "PTR_ERR(host->vmmc) < 0" to be
changed to IS_ERR(), which I think Arnd was originally complaining
about.
--
Ben Dooks http://www.codethink.co.uk/
Senior Engineer Codethink - Providing Genius
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