src/patches/linux-3.14.43_SuperSSpeed_NOTRIM.patch

   1 diff -Naur linux-3.14.43.org/drivers/ata/libata-core.c linux-3.14.43/drivers/ata/libata-core.c
   2 --- linux-3.14.43.org/drivers/ata/libata-core.c 2015-05-17 18:54:01.000000000 +0200
   3 +++ linux-3.14.43/drivers/ata/libata-core.c     2015-07-11 19:15:01.450041507 +0200
   4 @@ -4229,6 +4229,9 @@
   5         { "Micron_M550*",               NULL,   ATA_HORKAGE_NO_NCQ_TRIM, },
   6         { "Crucial_CT*M550SSD*",        NULL,   ATA_HORKAGE_NO_NCQ_TRIM, },
   7
   8 +       /* devices that don't properly handle TRIM commands */
   9 +       { "SuperSSpeed S238*",          NULL,   ATA_HORKAGE_NOTRIM, },
  10 +
  11         /*
  12          * Some WD SATA-I drives spin up and down erratically when the link
  13          * is put into the slumber mode.  We don't have full list of the
  14 diff -Naur linux-3.14.43.org/drivers/ata/libata-scsi.c linux-3.14.43/drivers/ata/libata-scsi.c
  15 --- linux-3.14.43.org/drivers/ata/libata-scsi.c 2015-05-17 18:54:01.000000000 +0200
  16 +++ linux-3.14.43/drivers/ata/libata-scsi.c     2015-07-11 20:47:22.570021716 +0200
  17 @@ -2510,11 +2513,15 @@
  18                 rbuf[14] = (lowest_aligned >> 8) & 0x3f;
  19                 rbuf[15] = lowest_aligned;
  20
  21 -               if (ata_id_has_trim(args->id)) {
  22 -                       rbuf[14] |= 0x80; /* TPE */
  23
  24 -                       if (ata_id_has_zero_after_trim(args->id))
  25 -                               rbuf[14] |= 0x40; /* TPRZ */
  26 +
  27 +               if (!(dev->horkage & ATA_HORKAGE_NOTRIM)) {
  28 +                       if (ata_id_has_trim(args->id)) {
  29 +                               rbuf[14] |= 0x80; /* TPE */
  30 +
  31 +                               if (ata_id_has_zero_after_trim(args->id))
  32 +                                       rbuf[14] |= 0x40; /* TPRZ */
  33 +                       }
  34                 }
  35         }
  36
  37 diff -Naur linux-3.14.43.org/include/linux/libata.h linux-3.14.43/include/linux/libata.h
  38 --- linux-3.14.43.org/include/linux/libata.h    2015-05-17 18:54:01.000000000 +0200
  39 +++ linux-3.14.43/include/linux/libata.h        2015-07-11 19:13:03.190682173 +0200
  40 @@ -421,6 +421,7 @@
  41         ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19),    /* don't use queued TRIM */
  42         ATA_HORKAGE_NOLPM       = (1 << 20),    /* don't use LPM */
  43         ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21),  /* some WDs have broken LPM */
  44 +       ATA_HORKAGE_NOTRIM      = (1 << 22),    /* don't use TRIM */
  45
  46          /* DMA mask for user DMA control: User visible values; DO NOT
  47             renumber */