Re: [PATCH 1/3] ata: add Palmchip BK3710 PATA controller driver

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On 03/12/2017 08:28 PM, Sergei Shtylyov wrote:

+static void pata_bk3710_set_piomode(struct ata_port *ap,
+                    struct ata_device *adev)
+{
+    void __iomem *base = (void __iomem *)ap->ioaddr.bmdma_addr;
+    struct ata_device *pair = ata_dev_pair(adev);
+    const struct ata_timing *t = ata_timing_find_mode(adev->pio_mode);
+    const u16 *id = adev->id;
+    unsigned int cycle_time;
+    int is_slave = adev->devno;
+    const u8 pio = adev->pio_mode - XFER_PIO_0;
+
+    if (id[ATA_ID_FIELD_VALID] & 2) {
+        if (ata_id_has_iordy(id))
+            cycle_time = id[ATA_ID_EIDE_PIO_IORDY];
+        else
+            cycle_time = id[ATA_ID_EIDE_PIO];
+
+        /* conservative "downgrade" for all pre-ATA2 drives */
+        if (pio < 3 && cycle_time < t->cycle)
+            cycle_time = 0; /* use standard timing */
+    }
+
+    if (!cycle_time)
+        cycle_time = t->cycle;

   This seems like a helper needed by libata in general but OK...

No, the build bot had already reported the problem with 'cycle_time' here, I just forgot about it.

[...]

   Well, no serious issues found, so you can stamp:

Acked-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>

   Too early, it seems... :-)

MBR, Sergei

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