Hi James,

On 7/25/19 7:46 AM, James Morse wrote:
Hi Thor,

On 12/07/2019 19:28, thor.tha...@linux.intel.com wrote:
From: Thor Thayer <thor.tha...@linux.intel.com>

ARM32 SoCFPGAs had separate IRQs for SDRAM. ARM64 SoCFPGAs
send all DBEs to SError so filtering by source is necessary.

The Stratix10 SDRAM ECC is a better match with the generic
Altera peripheral ECC framework because the linked list can
be searched to find the ECC block offset and printout
the DBE Address.


diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
index c2e693e34d43..09a80b53acea 100644
--- a/drivers/edac/altera_edac.c
+++ b/drivers/edac/altera_edac.c

@@ -2231,13 +2275,15 @@ static int altr_edac_a10_probe(struct platform_device 
*pdev)
                    of_device_is_compatible(child, "altr,socfpga-dma-ecc") ||
                    of_device_is_compatible(child, "altr,socfpga-usb-ecc") ||
                    of_device_is_compatible(child, "altr,socfpga-qspi-ecc") ||
+#ifdef CONFIG_EDAC_ALTERA_SDRAM
+                   of_device_is_compatible(child, "altr,sdram-edac-s10") ||
+#endif
                    of_device_is_compatible(child, "altr,socfpga-sdmmc-ecc"))

I'm just curious: This list looks suspiciously like the 
altr_edac_a10_device_of_match[]
list. Is there a reason it can't use of_match_device() here?

Good point. Yes, it does look very much like the match list. Although of_match_device() doesn't fit with the available parameters (device pointer), your question prompted me to look closer and I noticed of_match_node() is perfect.

I'll create a version 3 with this change.

Thanks for reviewing!

altr_edac_a10_device_add(edac, child); #ifdef CONFIG_EDAC_ALTERA_SDRAM
-               else if ((of_device_is_compatible(child, 
"altr,sdram-edac-a10")) ||
-                        (of_device_is_compatible(child, 
"altr,sdram-edac-s10")))
+               else if (of_device_is_compatible(child, "altr,sdram-edac-a10"))
                        of_platform_populate(pdev->dev.of_node,
                                             altr_sdram_ctrl_of_match,
                                             NULL, &pdev->dev);


Acked-by: James Morse <james.mo...@arm.com>


Thanks,

James


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