On Mon, 30 Sep 2024, Ricardo Ribalda wrote: > On Mon, 30 Sept 2024 at 14:38, Hans Verkuil <hverkuil@xxxxxxxxx> wrote: > > > > On 30/09/2024 14:21, Laurent Pinchart wrote: > > > Hi Ricardo, > > > > > > On Mon, Sep 30, 2024 at 12:03:55PM +0000, Ricardo Ribalda wrote: > > >> include/linux/string_choices.h contains a set of helpers that can be > > >> used instead of hard coding some strings. > > >> > > >> Cocci has located some places where the helpers can be used. This > > >> patchset uses the diff generated by cocci, plus these changes: > > > > > > Personally I think most of those helpers just hinder readability for not > > > much added gain. String de-duplication is done by the linker already. > > > The only value I see in the helpers is ensuring that the strings are > > > consistently written, and I think we can do so through other means. > > > > Just my opinion: I'm OK with these new helpers, but I am not too keen to apply > > all this to existing source code. I.e., for new code it is fine, but if we have > > to update all drivers every time a new cocci test is added, then that will not > > scale. > > > > Note that I never ran cocci in my build scripts, so this is a new check that > > we haven't set rules for or have much experience with. > > > > checkpatch just checks the patches, it doesn't force you to fix existing code. > > > > Some of the cocci tests are clearly checking for incorrect code, but others are > > for code improvements (i.e. the code was correct, it can just be done slightly > > better). It's the second category were I think that should only apply to new code, > > and not existing code. > > > > Regards, > > Julia, correct me if I am wrong, but I believe that cocci does not > have the ability to check only new code. It runs against files not > diffs. Coccinelle runs on files normally. There is an option --use-patch-diff where you can give a commit id, and it should only work on the files mentioned in that commit, but it doesn't seem to focus on only the new code in that commit. julia > > I agree with you, a "improvement cocci" shall not force us to drop the > pen and work full time to fix it :) > When a new "improvement" cocci check is landed, we should update our > "allowlist" immediately to ignore those warnings until we slowly > improve our codebase to meet the standard. > That way the CI is not affected. > > Regarding this patchset.... It is pretty big, but also pretty simple. > I added my "extra changes" on the cover letter to ease the review. > > If you or someone else have time to review it... then it will be great > if we land it. But if none has time for it, then it can be ignored. > > > Regards! > > > > > Hans > > > > > > > >> diff --git a/drivers/media/dvb-frontends/ascot2e.c b/drivers/media/dvb-frontends/ascot2e.c > > >> index 8c3eb5d69dda..ec7a718428fc 100644 > > >> --- a/drivers/media/dvb-frontends/ascot2e.c > > >> +++ b/drivers/media/dvb-frontends/ascot2e.c > > >> @@ -104,7 +104,7 @@ static void ascot2e_i2c_debug(struct ascot2e_priv *priv, > > >> u8 reg, u8 write, const u8 *data, u32 len) > > >> { > > >> dev_dbg(&priv->i2c->dev, "ascot2e: I2C %s reg 0x%02x size %d\n", > > >> - str_read_write(write == 0), reg, len); > > >> + str_write_read(write), reg, len); > > >> print_hex_dump_bytes("ascot2e: I2C data: ", > > >> DUMP_PREFIX_OFFSET, data, len); > > >> } > > >> diff --git a/drivers/media/dvb-frontends/cxd2841er.c b/drivers/media/dvb-frontends/cxd2841er.c > > >> index db684f314b47..d1b84cd9c510 100644 > > >> --- a/drivers/media/dvb-frontends/cxd2841er.c > > >> +++ b/drivers/media/dvb-frontends/cxd2841er.c > > >> @@ -206,7 +206,7 @@ static void cxd2841er_i2c_debug(struct cxd2841er_priv *priv, > > >> { > > >> dev_dbg(&priv->i2c->dev, > > >> "cxd2841er: I2C %s addr %02x reg 0x%02x size %d data %*ph\n", > > >> - str_read_write(write == 0), addr, reg, len, len, data); > > >> + str_write_read(write), addr, reg, len, len, data); > > >> } > > >> > > >> static int cxd2841er_write_regs(struct cxd2841er_priv *priv, > > >> diff --git a/drivers/media/dvb-frontends/helene.c b/drivers/media/dvb-frontends/helene.c > > >> index 52198cb49dba..b4527c141d9c 100644 > > >> --- a/drivers/media/dvb-frontends/helene.c > > >> +++ b/drivers/media/dvb-frontends/helene.c > > >> @@ -279,7 +279,7 @@ static void helene_i2c_debug(struct helene_priv *priv, > > >> u8 reg, u8 write, const u8 *data, u32 len) > > >> { > > >> dev_dbg(&priv->i2c->dev, "helene: I2C %s reg 0x%02x size %d\n", > > >> - str_read_write(write == 0), reg, len); > > >> + str_write_read(write), reg, len); > > >> print_hex_dump_bytes("helene: I2C data: ", > > >> DUMP_PREFIX_OFFSET, data, len); > > >> } > > >> diff --git a/drivers/media/dvb-frontends/horus3a.c b/drivers/media/dvb-frontends/horus3a.c > > >> index 84385079918c..10300ebf3ca0 100644 > > >> --- a/drivers/media/dvb-frontends/horus3a.c > > >> +++ b/drivers/media/dvb-frontends/horus3a.c > > >> @@ -38,7 +38,7 @@ static void horus3a_i2c_debug(struct horus3a_priv *priv, > > >> u8 reg, u8 write, const u8 *data, u32 len) > > >> { > > >> dev_dbg(&priv->i2c->dev, "horus3a: I2C %s reg 0x%02x size %d\n", > > >> - str_read_write(write == 0), reg, len); > > >> + str_write_read(write), reg, len); > > >> print_hex_dump_bytes("horus3a: I2C data: ", > > >> DUMP_PREFIX_OFFSET, data, len); > > >> } > > >> diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c > > >> index ba174aa45afa..a43479c3ff03 100644 > > >> --- a/drivers/media/i2c/adv7842.c > > >> +++ b/drivers/media/i2c/adv7842.c > > >> @@ -2763,7 +2763,7 @@ static int adv7842_cp_log_status(struct v4l2_subdev *sd) > > >> str_true_false(io_read(sd, 0x6a) & 0x10)); > > >> } > > >> v4l2_info(sd, "CP free run: %s\n", > > >> - str_on_off(!!(cp_read(sd, 0xff) & 0x10))); > > >> + str_on_off(cp_read(sd, 0xff) & 0x10)); > > >> v4l2_info(sd, "Prim-mode = 0x%x, video std = 0x%x, v_freq = 0x%x\n", > > >> io_read(sd, 0x01) & 0x0f, io_read(sd, 0x00) & 0x3f, > > >> (io_read(sd, 0x01) & 0x70) >> 4); > > >> diff --git a/drivers/media/pci/saa7134/saa7134-cards.c b/drivers/media/pci/saa7134/saa7134-cards.c > > >> index 301b89e799d8..79cd61fb0205 100644 > > >> --- a/drivers/media/pci/saa7134/saa7134-cards.c > > >> +++ b/drivers/media/pci/saa7134/saa7134-cards.c > > >> @@ -7981,7 +7981,7 @@ int saa7134_board_init2(struct saa7134_dev *dev) > > >> rc = i2c_transfer(&dev->i2c_adap, &msg, 1); > > >> pr_info("%s: probe IR chip @ i2c 0x%02x: %s\n", > > >> dev->name, msg.addr, > > >> - str_yes_no(1 == rc)); > > >> + str_yes_no(rc == 1)); > > >> if (rc == 1) > > >> dev->has_remote = SAA7134_REMOTE_I2C; > > >> } > > >> diff --git a/drivers/media/pci/saa7134/saa7134-input.c b/drivers/media/pci/saa7134/saa7134-input.c > > >> index 90837ec6e70f..239f0b9d080a 100644 > > >> --- a/drivers/media/pci/saa7134/saa7134-input.c > > >> +++ b/drivers/media/pci/saa7134/saa7134-input.c > > >> @@ -895,7 +895,7 @@ void saa7134_probe_i2c_ir(struct saa7134_dev *dev) > > >> rc = i2c_transfer(&dev->i2c_adap, &msg_msi, 1); > > >> input_dbg("probe 0x%02x @ %s: %s\n", > > >> msg_msi.addr, dev->i2c_adap.name, > > >> - str_yes_no(1 == rc)); > > >> + str_yes_no(rc == 1)); > > >> break; > > >> case SAA7134_BOARD_SNAZIO_TVPVR_PRO: > > >> dev->init_data.name = "SnaZio* TVPVR PRO"; > > >> @@ -931,7 +931,7 @@ void saa7134_probe_i2c_ir(struct saa7134_dev *dev) > > >> rc = i2c_transfer(&dev->i2c_adap, &msg_msi, 1); > > >> input_dbg("probe 0x%02x @ %s: %s\n", > > >> msg_msi.addr, dev->i2c_adap.name, > > >> - str_yes_no(1 == rc)); > > >> + str_yes_no(rc == 1)); > > >> break; > > >> case SAA7134_BOARD_HAUPPAUGE_HVR1110: > > >> dev->init_data.name = saa7134_boards[dev->board].name; > > >> diff --git a/drivers/media/usb/pvrusb2/pvrusb2-ctrl.c b/drivers/media/usb/pvrusb2/pvrusb2-ctrl.c > > >> index 448c40caf363..b6c9bda214c8 100644 > > >> --- a/drivers/media/usb/pvrusb2/pvrusb2-ctrl.c > > >> +++ b/drivers/media/usb/pvrusb2/pvrusb2-ctrl.c > > >> @@ -521,7 +521,7 @@ int pvr2_ctrl_value_to_sym_internal(struct pvr2_ctrl *cptr, > > >> *len = scnprintf(buf,maxlen,"%d",val); > > >> ret = 0; > > >> } else if (cptr->info->type == pvr2_ctl_bool) { > > >> - *len = scnprintf(buf,maxlen,"%s",str_true_false(val)); > > >> + *len = scnprintf(buf, maxlen, "%s", str_true_false(val)); > > >> ret = 0; > > >> } else if (cptr->info->type == pvr2_ctl_enum) { > > >> const char * const *names; > > >> diff --git a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c > > >> index 96d3a0045fac..761d718478ca 100644 > > >> --- a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c > > >> +++ b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c > > >> @@ -338,7 +338,7 @@ static void trace_stbit(const char *name,int val) > > >> { > > >> pvr2_trace(PVR2_TRACE_STBITS, > > >> "State bit %s <-- %s", > > >> - name,str_true_false(val)); > > >> + name, str_true_false(val)); > > >> } > > >> > > >> Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> > > >> --- > > >> Ricardo Ribalda (45): > > >> media: staging: ipu3: Use string_choices helpers > > >> media: staging: atomisp: Use string_choices helpers > > >> media: core: Use string_choices helpers > > >> media: pwc-ctl: Use string_choices helpers > > >> media: pvrusb2:Use string_choices helpers > > >> media: em28xx: Use string_choices helpers > > >> media: dvb-usb: Use string_choices helpers > > >> media: dvb-usb-v2: Use string_choices helpers > > >> media: cx231xx: Use string_choices helpers > > >> media: tuners: Use string_choices helpers > > >> media: rc: Use string_choices helpers > > >> media: dvb-frontends: Use string_choices helpers > > >> media: pci: cx23885: Use string_choices helpers > > >> media: saa7134: Use string_choices helpers > > >> media: amphion: Use string_choices helpers > > >> media: pci: ivtv: Use string_choices helpers > > >> media: bttv: Use string_choices helpers > > >> media: xilinx: Use string_choices helpers > > >> media: platform: ti: Use string_choices helpers > > >> media: st: Use string_choices helpers > > >> media: coda: Use string_choices helpers > > >> media: aspeed: Use string_choices helpers > > >> media: ipu6: Use string_choices helpers > > >> media: cx18: Use string_choices helpers > > >> media: cobalt: Use string_choices helpers > > >> media: videobuf2: Use string_choices helpers > > >> media: cec: Use string_choices helpers > > >> media: b2c2: Use string_choices helpers > > >> media: siano: Use string_choices helpers > > >> media: i2c: cx25840: Use string_choices helpers > > >> media: i2c: vpx3220: Use string_choices helpers > > >> media: i2c: tvp7002: Use string_choices helpers > > >> media: i2c: ths8200: Use string_choices helpers > > >> media: i2c: tda1997x: Use string_choices helpers > > >> media: i2c: tc358743: Use string_choices helpers > > >> media: i2c: st-mipid02: Use string_choices helpers > > >> media: i2c: msp3400: Use string_choices helpers > > >> media: i2c: max9286: Use string_choices helpers > > >> media: i2c: saa717x: Use string_choices helpers > > >> media: i2c: saa7127: Use string_choices helpers > > >> media: i2c: saa7115: Use string_choices helpers > > >> media: i2c: saa7110: Use string_choices helpers > > >> media: i2c: adv7842: Use string_choices helpers > > >> media: i2c: adv76xx: Use string_choices helpers > > >> media: i2c: adv7511: Use string_choices helpers > > >> > > >> drivers/media/cec/platform/cec-gpio/cec-gpio.c | 4 +- > > >> drivers/media/cec/usb/pulse8/pulse8-cec.c | 4 +- > > >> drivers/media/common/b2c2/flexcop-hw-filter.c | 4 +- > > >> drivers/media/common/siano/sms-cards.c | 3 +- > > >> drivers/media/common/videobuf2/videobuf2-core.c | 5 ++- > > >> drivers/media/dvb-frontends/ascot2e.c | 2 +- > > >> drivers/media/dvb-frontends/cx24120.c | 4 +- > > >> drivers/media/dvb-frontends/cxd2841er.c | 2 +- > > >> drivers/media/dvb-frontends/drxk_hard.c | 4 +- > > >> drivers/media/dvb-frontends/helene.c | 2 +- > > >> drivers/media/dvb-frontends/horus3a.c | 2 +- > > >> drivers/media/dvb-frontends/sp2.c | 2 +- > > >> drivers/media/i2c/adv7511-v4l2.c | 11 +++--- > > >> drivers/media/i2c/adv7604.c | 25 ++++++------ > > >> drivers/media/i2c/adv7842.c | 40 ++++++++++---------- > > >> drivers/media/i2c/cx25840/cx25840-core.c | 4 +- > > >> drivers/media/i2c/cx25840/cx25840-ir.c | 34 ++++++++--------- > > >> drivers/media/i2c/max9286.c | 2 +- > > >> drivers/media/i2c/msp3400-driver.c | 4 +- > > >> drivers/media/i2c/saa7110.c | 2 +- > > >> drivers/media/i2c/saa7115.c | 2 +- > > >> drivers/media/i2c/saa7127.c | 15 +++++--- > > >> drivers/media/i2c/saa717x.c | 2 +- > > >> drivers/media/i2c/st-mipid02.c | 2 +- > > >> drivers/media/i2c/tc358743.c | 44 ++++++++++------------ > > >> drivers/media/i2c/tda1997x.c | 6 +-- > > >> drivers/media/i2c/ths8200.c | 4 +- > > >> drivers/media/i2c/tvp7002.c | 2 +- > > >> drivers/media/i2c/vpx3220.c | 2 +- > > >> drivers/media/pci/bt8xx/bttv-cards.c | 16 ++++---- > > >> drivers/media/pci/bt8xx/bttv-driver.c | 6 +-- > > >> drivers/media/pci/cobalt/cobalt-driver.c | 2 +- > > >> drivers/media/pci/cx18/cx18-av-core.c | 4 +- > > >> drivers/media/pci/cx23885/altera-ci.c | 2 +- > > >> drivers/media/pci/cx23885/cimax2.c | 2 +- > > >> drivers/media/pci/cx23885/cx23888-ir.c | 36 +++++++++--------- > > >> drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c | 2 +- > > >> drivers/media/pci/ivtv/ivtvfb.c | 4 +- > > >> drivers/media/pci/saa7134/saa7134-cards.c | 2 +- > > >> drivers/media/pci/saa7134/saa7134-dvb.c | 2 +- > > >> drivers/media/pci/saa7134/saa7134-input.c | 6 +-- > > >> drivers/media/pci/saa7134/saa7134-video.c | 2 +- > > >> drivers/media/platform/amphion/venc.c | 2 +- > > >> drivers/media/platform/amphion/vpu_dbg.c | 2 +- > > >> drivers/media/platform/aspeed/aspeed-video.c | 4 +- > > >> drivers/media/platform/chips-media/coda/imx-vdoa.c | 3 +- > > >> drivers/media/platform/st/sti/hva/hva-debugfs.c | 6 +-- > > >> drivers/media/platform/ti/omap3isp/ispstat.c | 2 +- > > >> drivers/media/platform/xilinx/xilinx-csi2rxss.c | 18 ++++----- > > >> drivers/media/rc/ene_ir.c | 3 +- > > >> drivers/media/rc/mceusb.c | 3 +- > > >> drivers/media/rc/serial_ir.c | 5 ++- > > >> drivers/media/tuners/tda18250.c | 2 +- > > >> drivers/media/tuners/tda9887.c | 10 ++--- > > >> drivers/media/usb/cx231xx/cx231xx-i2c.c | 4 +- > > >> drivers/media/usb/cx231xx/cx231xx-video.c | 2 +- > > >> drivers/media/usb/dvb-usb-v2/az6007.c | 4 +- > > >> drivers/media/usb/dvb-usb-v2/dvb_usb_core.c | 4 +- > > >> drivers/media/usb/dvb-usb/af9005-fe.c | 4 +- > > >> drivers/media/usb/dvb-usb/dvb-usb-dvb.c | 6 +-- > > >> drivers/media/usb/dvb-usb/opera1.c | 8 ++-- > > >> drivers/media/usb/em28xx/em28xx-i2c.c | 4 +- > > >> drivers/media/usb/em28xx/em28xx-video.c | 2 +- > > >> drivers/media/usb/pvrusb2/pvrusb2-ctrl.c | 2 +- > > >> drivers/media/usb/pvrusb2/pvrusb2-debugifc.c | 3 +- > > >> drivers/media/usb/pvrusb2/pvrusb2-encoder.c | 5 +-- > > >> drivers/media/usb/pvrusb2/pvrusb2-hdw.c | 6 +-- > > >> drivers/media/usb/pvrusb2/pvrusb2-i2c-core.c | 3 +- > > >> drivers/media/usb/pwc/pwc-ctrl.c | 2 +- > > >> drivers/media/v4l2-core/v4l2-ctrls-core.c | 3 +- > > >> drivers/media/v4l2-core/v4l2-fwnode.c | 12 +++--- > > >> .../media/atomisp/pci/atomisp_compat_css20.c | 2 +- > > >> .../media/atomisp/pci/atomisp_csi2_bridge.c | 2 +- > > >> .../media/atomisp/pci/atomisp_gmin_platform.c | 4 +- > > >> drivers/staging/media/atomisp/pci/atomisp_v4l2.c | 4 +- > > >> .../media/atomisp/pci/runtime/binary/src/binary.c | 2 +- > > >> drivers/staging/media/atomisp/pci/sh_css.c | 2 +- > > >> drivers/staging/media/ipu3/ipu3-v4l2.c | 4 +- > > >> 78 files changed, 240 insertions(+), 239 deletions(-) > > >> --- > > >> base-commit: 9852d85ec9d492ebef56dc5f229416c925758edc > > >> change-id: 20240930-cocci-opportunity-40bca6a17c42 > > > > > > > > -- > Ricardo Ribalda >