Hello.
On 4/8/2015 9:59 PM, Brian Norris wrote:
When working on another SATA driver that uses libahci_platform, I
noticed an error in this driver; it tries to the the driver data for its
device, while libata also thinks it can set the driver data. See:
ahci_platform_init_host()
-> ata_host_alloc_pinfo()
-> ata_host_alloc()
-> dev_set_drvdata()
So instead of sticking the IP-specific platform data into drvdata, let's
use the plat_data variable that is reserved for this use.
Signed-off-by: Brian Norris <computersforpeace@xxxxxxxxx>
Cc: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxx>
Cc: Maxime Coquelin <maxime.coquelin@xxxxxx>
Cc: Patrice Chotard <patrice.chotard@xxxxxx>
---
This is ONLY compile tested; I don't have hardware to run. This looks like it
could have ramifications on suspend/resume support, and hot device removal
(e.g., sysfs unbind), so it might qualify as -stable, if someone can test it
drivers/ata/ahci_st.c | 25 ++++++++++++++-----------
1 file changed, 14 insertions(+), 11 deletions(-)
diff --git a/drivers/ata/ahci_st.c b/drivers/ata/ahci_st.c
index bc971af262e7..2bd2375c2ab1 100644
--- a/drivers/ata/ahci_st.c
+++ b/drivers/ata/ahci_st.c
[...]
@@ -107,7 +108,9 @@ static void st_ahci_host_stop(struct ata_host *host)
static int st_ahci_probe_resets(struct platform_device *pdev)
{
- struct st_ahci_drv_data *drv_data = platform_get_drvdata(pdev);
+ struct ata_host *host = dev_get_drvdata(&pdev->dev);
Why not just platform_get_drvdata()?
[...]
MBR, Sergei
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