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author | Tejun Heo <tj@kernel.org> | 2013-04-30 15:27:14 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 17:04:02 -0700 |
commit | c90fe6bc0343f7c26b30c9f503b1d061636ac8ee (patch) | |
tree | 185d629958e4c256e8bd16be2f1a8654a4fa6697 | |
parent | 196779b9b4ce1922afabdc20d0270720603bd46c (diff) | |
download | linux-c90fe6bc0343f7c26b30c9f503b1d061636ac8ee.tar.gz linux-c90fe6bc0343f7c26b30c9f503b1d061636ac8ee.tar.bz2 linux-c90fe6bc0343f7c26b30c9f503b1d061636ac8ee.zip |
dmi: morph dmi_dump_ids() into dmi_format_ids() which formats into a buffer
We're goning to use DMI identification for other purposes too. Morph
dmi_dump_ids() which is used to print DMI identification as a debug
message during boot into dmi_format_ids() which formats the same
information sans the leading "DMI:" tag into a string buffer.
dmi_present() is updated to format the information into dmi_ids_string[]
using the new function and print it with "DMI:" prefix.
dmi_ids_string[] will be used for another purpose by a future patch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r-- | drivers/firmware/dmi_scan.c | 44 |
1 files changed, 27 insertions, 17 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index 4cd392dbf115..862b1d27a85b 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -22,6 +22,9 @@ static u16 __initdata dmi_ver; */ static int dmi_initialized; +/* DMI system identification string used during boot */ +static char dmi_ids_string[128] __initdata; + static const char * __init dmi_string_nosave(const struct dmi_header *dm, u8 s) { const u8 *bp = ((u8 *) dm) + dm->length; @@ -376,38 +379,44 @@ static void __init dmi_decode(const struct dmi_header *dm, void *dummy) } } -static void __init print_filtered(const char *info) +static int __init print_filtered(char *buf, size_t len, const char *info) { + int c = 0; const char *p; if (!info) - return; + return c; for (p = info; *p; p++) if (isprint(*p)) - printk(KERN_CONT "%c", *p); + c += scnprintf(buf + c, len - c, "%c", *p); else - printk(KERN_CONT "\\x%02x", *p & 0xff); + c += scnprintf(buf + c, len - c, "\\x%02x", *p & 0xff); + return c; } -static void __init dmi_dump_ids(void) +static void __init dmi_format_ids(char *buf, size_t len) { + int c = 0; const char *board; /* Board Name is optional */ - printk(KERN_DEBUG "DMI: "); - print_filtered(dmi_get_system_info(DMI_SYS_VENDOR)); - printk(KERN_CONT " "); - print_filtered(dmi_get_system_info(DMI_PRODUCT_NAME)); + c += print_filtered(buf + c, len - c, + dmi_get_system_info(DMI_SYS_VENDOR)); + c += scnprintf(buf + c, len - c, " "); + c += print_filtered(buf + c, len - c, + dmi_get_system_info(DMI_PRODUCT_NAME)); + board = dmi_get_system_info(DMI_BOARD_NAME); if (board) { - printk(KERN_CONT "/"); - print_filtered(board); + c += scnprintf(buf + c, len - c, "/"); + c += print_filtered(buf + c, len - c, board); } - printk(KERN_CONT ", BIOS "); - print_filtered(dmi_get_system_info(DMI_BIOS_VERSION)); - printk(KERN_CONT " "); - print_filtered(dmi_get_system_info(DMI_BIOS_DATE)); - printk(KERN_CONT "\n"); + c += scnprintf(buf + c, len - c, ", BIOS "); + c += print_filtered(buf + c, len - c, + dmi_get_system_info(DMI_BIOS_VERSION)); + c += scnprintf(buf + c, len - c, " "); + c += print_filtered(buf + c, len - c, + dmi_get_system_info(DMI_BIOS_DATE)); } static int __init dmi_present(const char __iomem *p) @@ -431,7 +440,8 @@ static int __init dmi_present(const char __iomem *p) pr_info("Legacy DMI %d.%d present.\n", dmi_ver >> 8, dmi_ver & 0xFF); } - dmi_dump_ids(); + dmi_format_ids(dmi_ids_string, sizeof(dmi_ids_string)); + printk(KERN_DEBUG "DMI: %s\n", dmi_ids_string); return 0; } } |