From 918799ab6f278805d4811770e9b18ae36408c17f Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Mon, 9 Jan 2006 20:53:40 -0800 Subject: [PATCH] [PATCH] nvidiafb: Reduce stack usage Reduce stack usage of NVCommonSetup() Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/nvidia/nv_proto.h | 2 +- drivers/video/nvidia/nv_setup.c | 34 ++++++++++++++++++++++----------- drivers/video/nvidia/nvidia.c | 3 ++- 3 files changed, 26 insertions(+), 13 deletions(-) diff --git a/drivers/video/nvidia/nv_proto.h b/drivers/video/nvidia/nv_proto.h index 3353103e8b0b..b149a690ee0f 100644 --- a/drivers/video/nvidia/nv_proto.h +++ b/drivers/video/nvidia/nv_proto.h @@ -4,7 +4,7 @@ #define __NV_PROTO_H__ /* in nv_setup.c */ -void NVCommonSetup(struct fb_info *info); +int NVCommonSetup(struct fb_info *info); void NVWriteCrtc(struct nvidia_par *par, u8 index, u8 value); u8 NVReadCrtc(struct nvidia_par *par, u8 index); void NVWriteGr(struct nvidia_par *par, u8 index, u8 value); diff --git a/drivers/video/nvidia/nv_setup.c b/drivers/video/nvidia/nv_setup.c index 2c024523c622..a18a9aebf05f 100644 --- a/drivers/video/nvidia/nv_setup.c +++ b/drivers/video/nvidia/nv_setup.c @@ -290,22 +290,29 @@ static void nv10GetConfig(struct nvidia_par *par) par->MaxVClockFreqKHz = par->twoStagePLL ? 400000 : 350000; } -void NVCommonSetup(struct fb_info *info) +int NVCommonSetup(struct fb_info *info) { struct nvidia_par *par = info->par; - struct fb_var_screeninfo var; + struct fb_var_screeninfo *var; u16 implementation = par->Chipset & 0x0ff0; u8 *edidA = NULL, *edidB = NULL; - struct fb_monspecs monitorA, monitorB; + struct fb_monspecs *monitorA, *monitorB; struct fb_monspecs *monA = NULL, *monB = NULL; int mobile = 0; int tvA = 0; int tvB = 0; int FlatPanel = -1; /* really means the CRTC is slaved */ int Television = 0; + int err = 0; - memset(&monitorA, 0, sizeof(struct fb_monspecs)); - memset(&monitorB, 0, sizeof(struct fb_monspecs)); + var = kzalloc(sizeof(struct fb_var_screeninfo), GFP_KERNEL); + monitorA = kzalloc(sizeof(struct fb_monspecs), GFP_KERNEL); + monitorB = kzalloc(sizeof(struct fb_monspecs), GFP_KERNEL); + + if (!var || !monitorA || !monitorB) { + err = -ENOMEM; + goto done; + } par->PRAMIN = par->REGS + (0x00710000 / 4); par->PCRTC0 = par->REGS + (0x00600000 / 4); @@ -407,9 +414,9 @@ void NVCommonSetup(struct fb_info *info) par->CRTCnumber = 0; if (nvidia_probe_i2c_connector(info, 1, &edidA)) nvidia_probe_of_connector(info, 1, &edidA); - if (edidA && !fb_parse_edid(edidA, &var)) { + if (edidA && !fb_parse_edid(edidA, var)) { printk("nvidiafb: EDID found from BUS1\n"); - monA = &monitorA; + monA = monitorA; fb_edid_to_monspecs(edidA, monA); FlatPanel = (monA->input & FB_DISP_DDI) ? 1 : 0; @@ -495,17 +502,17 @@ void NVCommonSetup(struct fb_info *info) if (nvidia_probe_i2c_connector(info, 1, &edidA)) nvidia_probe_of_connector(info, 1, &edidA); - if (edidA && !fb_parse_edid(edidA, &var)) { + if (edidA && !fb_parse_edid(edidA, var)) { printk("nvidiafb: EDID found from BUS1\n"); - monA = &monitorA; + monA = monitorA; fb_edid_to_monspecs(edidA, monA); } if (nvidia_probe_i2c_connector(info, 2, &edidB)) nvidia_probe_of_connector(info, 2, &edidB); - if (edidB && !fb_parse_edid(edidB, &var)) { + if (edidB && !fb_parse_edid(edidB, var)) { printk("nvidiafb: EDID found from BUS2\n"); - monB = &monitorB; + monB = monitorB; fb_edid_to_monspecs(edidB, monB); } @@ -640,4 +647,9 @@ void NVCommonSetup(struct fb_info *info) kfree(edidA); kfree(edidB); +done: + kfree(var); + kfree(monitorA); + kfree(monitorB); + return err; } diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c index ae6f2ff70abf..dbcb8962e57d 100644 --- a/drivers/video/nvidia/nvidia.c +++ b/drivers/video/nvidia/nvidia.c @@ -1617,7 +1617,8 @@ static int __devinit nvidiafb_probe(struct pci_dev *pd, sprintf(nvidiafb_fix.id, "NV%x", (pd->device & 0x0ff0) >> 4); - NVCommonSetup(info); + if (NVCommonSetup(info)) + goto err_out_arch; par->FbAddress = nvidiafb_fix.smem_start; par->FbMapSize = par->RamAmountKBytes * 1024; -- 2.20.1