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Patch from Steven Scholz:

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should we rename the define into CONFIG_FEATURE_HDPARM_HDIO_DMA and
use it for "set" and "get" ???

Since although CONFIG_FEATURE_HDPARM_HDIO_GET_DMA is _not_ set I still
can use "hdparm -d 1 /dev/hda" to switch the DMA on.
Is this desireable or meant to be like that?

So how about the applied patch?
This commit is contained in:
Eric Andersen 2003-08-06 08:57:35 +00:00
parent 4b4e09854c
commit 0a57a79e38
3 changed files with 20 additions and 2 deletions
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8
include/usage.h
View File

@ -835,6 +835,12 @@
#define USAGE_TRISTATE_HWIF(a)
#endif
#ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
#define USAGE_GETSET_DMA(a) a
#else
#define USAGE_GETSET_DMA(a)
#endif
#define hdparm_trivial_usage \
"[options] [device] .."
#define hdparm_full_usage \
@ -845,7 +851,7 @@
" -B set Advanced Power Management setting (1-255)\n" \
" -c get/set IDE 32-bit IO setting\n" \
" -C check IDE power mode status\n" \
" -d get/set using_dma flag\n" \
USAGE_GETSET_DMA(" -d get/set using_dma flag\n") \
" -D enable/disable drive defect-mgmt\n" \
" -f flush buffer cache for device on exit\n" \
" -g display drive geometry\n" \

8
miscutils/Config.in
View File

@ -100,6 +100,14 @@ config CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
and the '-b' option to get/set bus state. This is dangerous
stuff, so you should probably say N.
config CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
bool " get/set using_dma flag (DANGEROUS)"
default n
depends on CONFIG_HDPARM
help
Enables the 'hdparm -d' option to get/set using_dma flag.
This is dangerous stuff, so you should probably say N.
config CONFIG_MAKEDEVS
bool "makedevs"
default n

6
miscutils/hdparm.c
View File

@ -1820,6 +1820,7 @@ static void process_dev (char *devname)
if (ioctl(fd, HDIO_SET_UNMASKINTR, unmask))
bb_perror_msg(" HDIO_SET_UNMASKINTR failed");
}
#ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
if (set_dma) {
no_scsi();
if (get_dma) {
@ -1829,6 +1830,7 @@ static void process_dev (char *devname)
if (ioctl(fd, HDIO_SET_DMA, dma))
bb_perror_msg(" HDIO_SET_DMA failed");
}
#endif /* CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA */
if (set_dma_q) {
no_scsi();
if (get_dma_q) {
@ -2080,7 +2082,7 @@ static void process_dev (char *devname)
}
}
#ifdef CONFIG_FEATURE_HDPARM_HDIO_GET_DMA
#ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
if ((verbose && !is_scsi_hd) || get_dma) {
no_scsi();
if (ioctl(fd, HDIO_GET_DMA, &parm))
@ -2382,6 +2384,7 @@ int hdparm_main(int argc, char **argv)
unmask = *p++ - '0';
}
break;
#ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
case 'd':
get_dma = noisy;
noisy = 1;
@ -2392,6 +2395,7 @@ int hdparm_main(int argc, char **argv)
dma = *p++ - '0';
}
break;
#endif /* CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA */
case 'n':
get_nowerr = noisy;
noisy = 1;