diff options
| author | Paulius Zaleckas <paulius.zaleckas@teltonika.lt> | 2008-07-09 17:03:20 +0400 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2008-07-27 03:26:16 +0400 |
| commit | c5d5e9c40fc6cabedd5fdc7441e6e9d37f5c9bba (patch) | |
| tree | 3deff42e5df9db82d26eee20527ef01d85e7fc2e /drivers/mmc/host/imxmmc.c | |
| parent | 5fc63dfba8a016caf832572aeaa90abef82f0ba0 (diff) | |
| download | linux-c5d5e9c40fc6cabedd5fdc7441e6e9d37f5c9bba.tar.xz | |
imxmmc: fix crash when no platform data is provided
Don't crash if no platform data is provided.
In this case assume that card is present.
Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Acked-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers/mmc/host/imxmmc.c')
| -rw-r--r-- | drivers/mmc/host/imxmmc.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/mmc/host/imxmmc.c b/drivers/mmc/host/imxmmc.c index 9cda12fba9aa..f61406da65d2 100644 --- a/drivers/mmc/host/imxmmc.c +++ b/drivers/mmc/host/imxmmc.c @@ -905,7 +905,8 @@ static void imxmci_check_status(unsigned long data) { struct imxmci_host *host = (struct imxmci_host *)data; - if( host->pdata->card_present(mmc_dev(host->mmc)) != host->present ) { + if (host->pdata && host->pdata->card_present && + host->pdata->card_present(mmc_dev(host->mmc)) != host->present) { host->present ^= 1; dev_info(mmc_dev(host->mmc), "card %s\n", host->present ? "inserted" : "removed"); @@ -968,6 +969,8 @@ static int imxmci_probe(struct platform_device *pdev) host->mmc = mmc; host->dma_allocated = 0; host->pdata = pdev->dev.platform_data; + if (!host->pdata) + dev_warn(&pdev->dev, "No platform data provided!\n"); spin_lock_init(&host->lock); host->res = r; @@ -1020,7 +1023,11 @@ static int imxmci_probe(struct platform_device *pdev) if (ret) goto out; - host->present = host->pdata->card_present(mmc_dev(mmc)); + if (host->pdata && host->pdata->card_present) + host->present = host->pdata->card_present(mmc_dev(mmc)); + else /* if there is no way to detect assume that card is present */ + host->present = 1; + init_timer(&host->timer); host->timer.data = (unsigned long)host; host->timer.function = imxmci_check_status; |