From 46c13c131d3b73080aa0f50f45e834a9ab3c0e71 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Sat, 16 Feb 2013 13:49:21 +1000 Subject: drm/nv50-/disp: 0x0000 is a valid udisp config value Return an out-of-range value instead to signal a failure from exec_clkcmp(). Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/engine/disp/nv50.c | 16 +++++++--------- drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c | 15 +++++++-------- 2 files changed, 14 insertions(+), 17 deletions(-) (limited to 'drivers/gpu/drm/nouveau') diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c index 78f09c3dff1..c3806122d77 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c @@ -863,8 +863,8 @@ exec_clkcmp(struct nv50_disp_priv *priv, int head, int id, u32 pclk, struct nvbios_outp info1; struct nvbios_ocfg info2; u8 ver, hdr, cnt, len; - u16 data, conf; u32 ctrl = 0x00000000; + u32 data, conf = ~0; int i; for (i = 0; !(ctrl & (1 << head)) && i < 3; i++) @@ -885,12 +885,12 @@ exec_clkcmp(struct nv50_disp_priv *priv, int head, int id, u32 pclk, } if (!(ctrl & (1 << head))) - return 0x0000; + return conf; i--; data = exec_lookup(priv, head, i, ctrl, outp, &ver, &hdr, &cnt, &len, &info1); if (!data) - return 0x0000; + return conf; switch (outp->type) { case DCB_OUTPUT_TMDS: @@ -923,13 +923,11 @@ exec_clkcmp(struct nv50_disp_priv *priv, int head, int id, u32 pclk, .execute = 1, }; - if (nvbios_exec(&init)) - return 0x0000; - return conf; + nvbios_exec(&init); } } - return 0x0000; + return conf; } static void @@ -1082,7 +1080,7 @@ nv50_disp_intr_unk20(struct nv50_disp_priv *priv, u32 super) if (head >= 0) { u32 pclk = nv_rd32(priv, 0x610ad0 + (head * 0x540)) & 0x3fffff; u32 conf = exec_clkcmp(priv, head, 0, pclk, &outp); - if (conf) { + if (conf != ~0) { if (outp.type == DCB_OUTPUT_ANALOG) { addr = 0x614280 + (ffs(outp.or) - 1) * 0x800; mask = 0xffffffff; @@ -1132,7 +1130,7 @@ nv50_disp_intr_unk40(struct nv50_disp_priv *priv, u32 super) if (head >= 0) { struct dcb_output outp; u32 pclk = nv_rd32(priv, 0x610ad0 + (head * 0x540)) & 0x3fffff; - if (pclk && exec_clkcmp(priv, head, 1, pclk, &outp)) { + if (exec_clkcmp(priv, head, 1, pclk, &outp) != ~0) { if (outp.type == DCB_OUTPUT_TMDS) nv50_disp_intr_unk40_tmds(priv, &outp); } diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c b/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c index 44618993661..77cc7302407 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c @@ -657,11 +657,11 @@ exec_clkcmp(struct nv50_disp_priv *priv, int head, int outp, struct nvbios_ocfg info2; struct dcb_output dcb; u8 ver, hdr, cnt, len; - u16 data, conf; + u32 data, conf = ~0; data = exec_lookup(priv, head, outp, ctrl, &dcb, &ver, &hdr, &cnt, &len, &info1); if (data == 0x0000) - return false; + return conf; switch (dcb.type) { case DCB_OUTPUT_TMDS: @@ -694,13 +694,11 @@ exec_clkcmp(struct nv50_disp_priv *priv, int head, int outp, .execute = 1, }; - if (nvbios_exec(&init)) - return 0x0000; - return conf; + nvbios_exec(&init); } } - return 0x0000; + return conf; } static void @@ -785,9 +783,10 @@ nvd0_display_unk2_handler(struct nv50_disp_priv *priv, u32 head, u32 mask) nv_wr32(priv, 0x612200 + (head * 0x800), 0x00000000); for (i = 0; mask && i < 8; i++) { - u32 mcp = nv_rd32(priv, 0x660180 + (i * 0x20)), cfg; + u32 mcp = nv_rd32(priv, 0x660180 + (i * 0x20)); if (mcp & (1 << head)) { - if ((cfg = exec_clkcmp(priv, head, i, mcp, 0, pclk))) { + u32 cfg = exec_clkcmp(priv, head, i, mcp, 0, pclk); + if (cfg != ~0) { u32 addr, mask, data = 0x00000000; if (i < 4) { addr = 0x612280 + ((i - 0) * 0x800); -- cgit v1.2.3