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| author | Gwendal Grignou <gwendal@google.com> | 2013-10-25 16:28:57 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-04 10:55:51 -0800 |
| commit | 929742b8d766876b34f92fd3e40aed8d189dade4 (patch) | |
| tree | a0ed70fa89979114ed7aab44b7de5cb66aa3cb57 /drivers | |
| parent | a878002b71bf238810b6e2a885455601222ac140 (diff) | |
| download | linux-3.10-929742b8d766876b34f92fd3e40aed8d189dade4.tar.gz linux-3.10-929742b8d766876b34f92fd3e40aed8d189dade4.tar.bz2 linux-3.10-929742b8d766876b34f92fd3e40aed8d189dade4.zip | |
libata: Fix display of sata speed
commit 3e85c3ecbc520751324a191d23bb94873ed01b10 upstream.
6.0 Gbps link speed was not decoded properly:
speed was reported at 3.0 Gbps only.
Tested: On a machine where libata reports 6.0 Gbps in
/var/log/messages:
ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
Before:
cat /sys/class/ata_link/link1/sata_spd
3.0 Gbps
After:
cat /sys/class/ata_link/link1/sata_spd
6.0 Gbps
Signed-off-by: Gwendal Grignou <gwendal@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/libata-transport.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c index c04d393d20c..08e67285645 100644 --- a/drivers/ata/libata-transport.c +++ b/drivers/ata/libata-transport.c @@ -319,25 +319,25 @@ int ata_tport_add(struct device *parent, /* * ATA link attributes */ +static int noop(int x) { return x; } - -#define ata_link_show_linkspeed(field) \ +#define ata_link_show_linkspeed(field, format) \ static ssize_t \ show_ata_link_##field(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct ata_link *link = transport_class_to_link(dev); \ \ - return sprintf(buf,"%s\n", sata_spd_string(fls(link->field))); \ + return sprintf(buf, "%s\n", sata_spd_string(format(link->field))); \ } -#define ata_link_linkspeed_attr(field) \ - ata_link_show_linkspeed(field) \ +#define ata_link_linkspeed_attr(field, format) \ + ata_link_show_linkspeed(field, format) \ static DEVICE_ATTR(field, S_IRUGO, show_ata_link_##field, NULL) -ata_link_linkspeed_attr(hw_sata_spd_limit); -ata_link_linkspeed_attr(sata_spd_limit); -ata_link_linkspeed_attr(sata_spd); +ata_link_linkspeed_attr(hw_sata_spd_limit, fls); +ata_link_linkspeed_attr(sata_spd_limit, fls); +ata_link_linkspeed_attr(sata_spd, noop); static DECLARE_TRANSPORT_CLASS(ata_link_class, |