From 76fa82fb7156aa7191dfd1fdede1fc0da51d45dd Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Fri, 9 Sep 2005 13:03:21 -0700 Subject: [PATCH] [PATCH] pcmcia: reduce ds.c stack footprint This patch reduces the stack footprint of pcmcia_device_query() from 416 bytes to 36 bytes. Signed-off-by: Ingo Molnar Signed-off-by: Dominik Brodowski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/pcmcia/ds.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index 43da2e92d50f..398146e3823e 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -424,9 +424,13 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev) { cistpl_manfid_t manf_id; cistpl_funcid_t func_id; - cistpl_vers_1_t vers1; + cistpl_vers_1_t *vers1; unsigned int i; + vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL); + if (!vers1) + return -ENOMEM; + if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_MANFID, &manf_id)) { p_dev->manf_id = manf_id.manf; @@ -443,23 +447,30 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev) /* rule of thumb: cards with no FUNCID, but with * common memory device geometry information, are * probably memory cards (from pcmcia-cs) */ - cistpl_device_geo_t devgeo; + cistpl_device_geo_t *devgeo; + + devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL); + if (!devgeo) { + kfree(vers1); + return -ENOMEM; + } if (!pccard_read_tuple(p_dev->socket, p_dev->func, - CISTPL_DEVICE_GEO, &devgeo)) { + CISTPL_DEVICE_GEO, devgeo)) { ds_dbg(0, "mem device geometry probably means " "FUNCID_MEMORY\n"); p_dev->func_id = CISTPL_FUNCID_MEMORY; p_dev->has_func_id = 1; } + kfree(devgeo); } if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1, - &vers1)) { - for (i=0; i < vers1.ns; i++) { + vers1)) { + for (i=0; i < vers1->ns; i++) { char *tmp; unsigned int length; - tmp = vers1.str + vers1.ofs[i]; + tmp = vers1->str + vers1->ofs[i]; length = strlen(tmp) + 1; if ((length < 3) || (length > 255)) @@ -475,6 +486,7 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev) } } + kfree(vers1); return 0; } -- 2.30.2