i2c_bit_add_bus can call the pre_xfer function, which expects the func pointer to be set. Pass in func to the port creation logic so that it is set before i2c_bit_add_bus.
See https://bugs.freedesktop.org/show_bug.cgi?id=68456 Reported-by: Hans-Peter Deifel <hpdeifel at gmx.de> Tested-by: Hans-Peter Deifel <hpdeifel at gmx.de> Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu> --- This will only happen if i2c_algo_bit.bit_test=1. drivers/gpu/drm/nouveau/core/include/subdev/i2c.h | 8 +++++--- drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c | 10 ++++------ drivers/gpu/drm/nouveau/core/subdev/i2c/base.c | 2 ++ drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c | 4 ++-- drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c | 4 ++-- drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c | 4 ++-- drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c | 8 ++++---- drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c | 4 ++-- 8 files changed, 23 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h b/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h index 888384c..7e4e277 100644 --- a/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h +++ b/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h @@ -39,8 +39,8 @@ struct nouveau_i2c_func { int (*drv_ctl)(struct nouveau_i2c_port *, int lane, int sw, int pe); }; -#define nouveau_i2c_port_create(p,e,o,i,a,d) \ - nouveau_i2c_port_create_((p), (e), (o), (i), (a), \ +#define nouveau_i2c_port_create(p,e,o,i,a,f,d) \ + nouveau_i2c_port_create_((p), (e), (o), (i), (a), (f), \ sizeof(**d), (void **)d) #define nouveau_i2c_port_destroy(p) ({ \ struct nouveau_i2c_port *port = (p); \ @@ -53,7 +53,9 @@ struct nouveau_i2c_func { int nouveau_i2c_port_create_(struct nouveau_object *, struct nouveau_object *, struct nouveau_oclass *, u8, - const struct i2c_algorithm *, int, void **); + const struct i2c_algorithm *, + const struct nouveau_i2c_func *, + int, void **); void _nouveau_i2c_port_dtor(struct nouveau_object *); #define _nouveau_i2c_port_init nouveau_object_init #define _nouveau_i2c_port_fini nouveau_object_fini diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c index dec94e9..4b195ac 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c @@ -118,7 +118,8 @@ anx9805_aux_chan_ctor(struct nouveau_object *parent, int ret; ret = nouveau_i2c_port_create(parent, engine, oclass, index, - &nouveau_i2c_aux_algo, &chan); + &nouveau_i2c_aux_algo, &anx9805_aux_func, + &chan); *pobject = nv_object(chan); if (ret) return ret; @@ -140,8 +141,6 @@ anx9805_aux_chan_ctor(struct nouveau_object *parent, struct i2c_algo_bit_data *algo = mast->adapter.algo_data; algo->udelay = max(algo->udelay, 40); } - - chan->base.func = &anx9805_aux_func; return 0; } @@ -234,7 +233,8 @@ anx9805_ddc_port_ctor(struct nouveau_object *parent, int ret; ret = nouveau_i2c_port_create(parent, engine, oclass, index, - &anx9805_i2c_algo, &port); + &anx9805_i2c_algo, &anx9805_i2c_func, + &port); *pobject = nv_object(port); if (ret) return ret; @@ -256,8 +256,6 @@ anx9805_ddc_port_ctor(struct nouveau_object *parent, struct i2c_algo_bit_data *algo = mast->adapter.algo_data; algo->udelay = max(algo->udelay, 40); } - - port->base.func = &anx9805_i2c_func; return 0; } diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c index 8ae2625..2895c19 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c @@ -95,6 +95,7 @@ nouveau_i2c_port_create_(struct nouveau_object *parent, struct nouveau_object *engine, struct nouveau_oclass *oclass, u8 index, const struct i2c_algorithm *algo, + const struct nouveau_i2c_func *func, int size, void **pobject) { struct nouveau_device *device = nv_device(parent); @@ -112,6 +113,7 @@ nouveau_i2c_port_create_(struct nouveau_object *parent, port->adapter.owner = THIS_MODULE; port->adapter.dev.parent = &device->pdev->dev; port->index = index; + port->func = func; i2c_set_adapdata(&port->adapter, i2c); if ( algo == &nouveau_i2c_bit_algo && diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c index 2ad1884..860d5d2 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c @@ -91,12 +91,12 @@ nv04_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, int ret; ret = nouveau_i2c_port_create(parent, engine, oclass, index, - &nouveau_i2c_bit_algo, &port); + &nouveau_i2c_bit_algo, &nv04_i2c_func, + &port); *pobject = nv_object(port); if (ret) return ret; - port->base.func = &nv04_i2c_func; port->drive = info->drive; port->sense = info->sense; return 0; diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c index f501ae2..0c2655a 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c @@ -84,12 +84,12 @@ nv4e_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, int ret; ret = nouveau_i2c_port_create(parent, engine, oclass, index, - &nouveau_i2c_bit_algo, &port); + &nouveau_i2c_bit_algo, &nv4e_i2c_func, + &port); *pobject = nv_object(port); if (ret) return ret; - port->base.func = &nv4e_i2c_func; port->addr = 0x600800 + info->drive; return 0; } diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c index 378dfa3..a8d67a2 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c @@ -85,7 +85,8 @@ nv50_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, int ret; ret = nouveau_i2c_port_create(parent, engine, oclass, index, - &nouveau_i2c_bit_algo, &port); + &nouveau_i2c_bit_algo, &nv50_i2c_func, + &port); *pobject = nv_object(port); if (ret) return ret; @@ -93,7 +94,6 @@ nv50_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, if (info->drive >= nv50_i2c_addr_nr) return -EINVAL; - port->base.func = &nv50_i2c_func; port->state = 0x00000007; port->addr = nv50_i2c_addr[info->drive]; return 0; diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c index 61b7716..df6d3e4 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c @@ -186,7 +186,8 @@ nv94_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, int ret; ret = nouveau_i2c_port_create(parent, engine, oclass, index, - &nouveau_i2c_bit_algo, &port); + &nouveau_i2c_bit_algo, &nv94_i2c_func, + &port); *pobject = nv_object(port); if (ret) return ret; @@ -194,7 +195,6 @@ nv94_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, if (info->drive >= nv50_i2c_addr_nr) return -EINVAL; - port->base.func = &nv94_i2c_func; port->state = 7; port->addr = nv50_i2c_addr[info->drive]; if (info->share != DCB_I2C_UNUSED) { @@ -221,12 +221,12 @@ nv94_aux_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, int ret; ret = nouveau_i2c_port_create(parent, engine, oclass, index, - &nouveau_i2c_aux_algo, &port); + &nouveau_i2c_aux_algo, &nv94_aux_func, + &port); *pobject = nv_object(port); if (ret) return ret; - port->base.func = &nv94_aux_func; port->addr = info->drive; if (info->share != DCB_I2C_UNUSED) { port->ctrl = 0x00e500 + (info->drive * 0x50); diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c index f761b8a..29967d3 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c @@ -60,12 +60,12 @@ nvd0_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, int ret; ret = nouveau_i2c_port_create(parent, engine, oclass, index, - &nouveau_i2c_bit_algo, &port); + &nouveau_i2c_bit_algo, &nvd0_i2c_func, + &port); *pobject = nv_object(port); if (ret) return ret; - port->base.func = &nvd0_i2c_func; port->state = 0x00000007; port->addr = 0x00d014 + (info->drive * 0x20); if (info->share != DCB_I2C_UNUSED) { -- 1.8.1.5
