| Message ID | 20200324150847.10476-8-frankja@linux.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | pc-bios: s390x: Cleanup part 1 | expand |
On 24.03.20 16:08, Janosch Frank wrote: > 0x00 looks odd, time to replace it with 0 or 0x0 (for pointers). s/0x0/NULL/ ? > > Signed-off-by: Janosch Frank <frankja@linux.ibm.com> > --- > pc-bios/s390-ccw/dasd-ipl.c | 14 +++++++------- > 1 file changed, 7 insertions(+), 7 deletions(-) > > diff --git a/pc-bios/s390-ccw/dasd-ipl.c b/pc-bios/s390-ccw/dasd-ipl.c > index b932531e6f838405..764ee89e92e3ae8d 100644 > --- a/pc-bios/s390-ccw/dasd-ipl.c > +++ b/pc-bios/s390-ccw/dasd-ipl.c > @@ -98,18 +98,18 @@ static int run_dynamic_ccw_program(SubChannelId schid, uint16_t cutype, > > static void make_readipl(void) > { > - Ccw0 *ccwIplRead = (Ccw0 *)0x00; > + Ccw0 *ccwIplRead = (Ccw0 *)0x0; > > /* Create Read IPL ccw at address 0 */ > ccwIplRead->cmd_code = CCW_CMD_READ_IPL; > - ccwIplRead->cda = 0x00; /* Read into address 0x00 in main memory */ > + ccwIplRead->cda = 0x0; /* Read into address 0x00 in main memory */ > ccwIplRead->chain = 0; /* Chain flag */ > ccwIplRead->count = 0x18; /* Read 0x18 bytes of data */ > } > > static void run_readipl(SubChannelId schid, uint16_t cutype) > { > - if (do_cio(schid, cutype, 0x00, CCW_FMT0)) { > + if (do_cio(schid, cutype, 0x0, CCW_FMT0)) { > panic("dasd-ipl: Failed to run Read IPL channel program\n"); > } > } > @@ -133,10 +133,10 @@ static void check_ipl2(uint32_t ipl2_addr) > { > Ccw0 *ccw = u32toptr(ipl2_addr); > > - if (ipl2_addr == 0x00) { > + if (ipl2_addr == 0) { > panic("IPL2 address invalid. Is this disk really bootable?\n"); > } > - if (ccw->cmd_code == 0x00) { > + if (ccw->cmd_code == 0) { > panic("IPL2 ccw data invalid. Is this disk really bootable?\n"); > } > } > @@ -161,7 +161,7 @@ static void ipl1_fixup(void) > memcpy(ccwRead, (void *)0x08, 16); > > /* Disable chaining so we don't TIC to IPL2 channel program */ > - ccwRead->chain = 0x00; > + ccwRead->chain = 0; > > ccwSeek->cmd_code = CCW_CMD_DASD_SEEK; > ccwSeek->cda = ptr2u32(seekData); > @@ -206,7 +206,7 @@ static void run_ipl2(SubChannelId schid, uint16_t cutype, uint32_t addr) > */ > void dasd_ipl(SubChannelId schid, uint16_t cutype) > { > - PSWLegacy *pswl = (PSWLegacy *) 0x00; > + PSWLegacy *pswl = (PSWLegacy *) 0x0; > uint32_t ipl2_addr; > > /* Construct Read IPL CCW and run it to read IPL1 from boot disk */ >
On 4/30/20 5:36 PM, David Hildenbrand wrote: > On 24.03.20 16:08, Janosch Frank wrote: >> 0x00 looks odd, time to replace it with 0 or 0x0 (for pointers). > > s/0x0/NULL/ ? I'd like to avoid NULL if I refer to offset 0 of the memory and only use it to indicate that I purposely do not assign any specific value to a pointer. > >> >> Signed-off-by: Janosch Frank <frankja@linux.ibm.com> >> --- >> pc-bios/s390-ccw/dasd-ipl.c | 14 +++++++------- >> 1 file changed, 7 insertions(+), 7 deletions(-) >> >> diff --git a/pc-bios/s390-ccw/dasd-ipl.c b/pc-bios/s390-ccw/dasd-ipl.c >> index b932531e6f838405..764ee89e92e3ae8d 100644 >> --- a/pc-bios/s390-ccw/dasd-ipl.c >> +++ b/pc-bios/s390-ccw/dasd-ipl.c >> @@ -98,18 +98,18 @@ static int run_dynamic_ccw_program(SubChannelId schid, uint16_t cutype, >> >> static void make_readipl(void) >> { >> - Ccw0 *ccwIplRead = (Ccw0 *)0x00; >> + Ccw0 *ccwIplRead = (Ccw0 *)0x0; >> >> /* Create Read IPL ccw at address 0 */ >> ccwIplRead->cmd_code = CCW_CMD_READ_IPL; >> - ccwIplRead->cda = 0x00; /* Read into address 0x00 in main memory */ >> + ccwIplRead->cda = 0x0; /* Read into address 0x00 in main memory */ >> ccwIplRead->chain = 0; /* Chain flag */ >> ccwIplRead->count = 0x18; /* Read 0x18 bytes of data */ >> } >> >> static void run_readipl(SubChannelId schid, uint16_t cutype) >> { >> - if (do_cio(schid, cutype, 0x00, CCW_FMT0)) { >> + if (do_cio(schid, cutype, 0x0, CCW_FMT0)) { >> panic("dasd-ipl: Failed to run Read IPL channel program\n"); >> } >> } >> @@ -133,10 +133,10 @@ static void check_ipl2(uint32_t ipl2_addr) >> { >> Ccw0 *ccw = u32toptr(ipl2_addr); >> >> - if (ipl2_addr == 0x00) { >> + if (ipl2_addr == 0) { >> panic("IPL2 address invalid. Is this disk really bootable?\n"); >> } >> - if (ccw->cmd_code == 0x00) { >> + if (ccw->cmd_code == 0) { >> panic("IPL2 ccw data invalid. Is this disk really bootable?\n"); >> } >> } >> @@ -161,7 +161,7 @@ static void ipl1_fixup(void) >> memcpy(ccwRead, (void *)0x08, 16); >> >> /* Disable chaining so we don't TIC to IPL2 channel program */ >> - ccwRead->chain = 0x00; >> + ccwRead->chain = 0; >> >> ccwSeek->cmd_code = CCW_CMD_DASD_SEEK; >> ccwSeek->cda = ptr2u32(seekData); >> @@ -206,7 +206,7 @@ static void run_ipl2(SubChannelId schid, uint16_t cutype, uint32_t addr) >> */ >> void dasd_ipl(SubChannelId schid, uint16_t cutype) >> { >> - PSWLegacy *pswl = (PSWLegacy *) 0x00; >> + PSWLegacy *pswl = (PSWLegacy *) 0x0; >> uint32_t ipl2_addr; >> >> /* Construct Read IPL CCW and run it to read IPL1 from boot disk */ >> > >
diff --git a/pc-bios/s390-ccw/dasd-ipl.c b/pc-bios/s390-ccw/dasd-ipl.c index b932531e6f838405..764ee89e92e3ae8d 100644 --- a/pc-bios/s390-ccw/dasd-ipl.c +++ b/pc-bios/s390-ccw/dasd-ipl.c @@ -98,18 +98,18 @@ static int run_dynamic_ccw_program(SubChannelId schid, uint16_t cutype, static void make_readipl(void) { - Ccw0 *ccwIplRead = (Ccw0 *)0x00; + Ccw0 *ccwIplRead = (Ccw0 *)0x0; /* Create Read IPL ccw at address 0 */ ccwIplRead->cmd_code = CCW_CMD_READ_IPL; - ccwIplRead->cda = 0x00; /* Read into address 0x00 in main memory */ + ccwIplRead->cda = 0x0; /* Read into address 0x00 in main memory */ ccwIplRead->chain = 0; /* Chain flag */ ccwIplRead->count = 0x18; /* Read 0x18 bytes of data */ } static void run_readipl(SubChannelId schid, uint16_t cutype) { - if (do_cio(schid, cutype, 0x00, CCW_FMT0)) { + if (do_cio(schid, cutype, 0x0, CCW_FMT0)) { panic("dasd-ipl: Failed to run Read IPL channel program\n"); } } @@ -133,10 +133,10 @@ static void check_ipl2(uint32_t ipl2_addr) { Ccw0 *ccw = u32toptr(ipl2_addr); - if (ipl2_addr == 0x00) { + if (ipl2_addr == 0) { panic("IPL2 address invalid. Is this disk really bootable?\n"); } - if (ccw->cmd_code == 0x00) { + if (ccw->cmd_code == 0) { panic("IPL2 ccw data invalid. Is this disk really bootable?\n"); } } @@ -161,7 +161,7 @@ static void ipl1_fixup(void) memcpy(ccwRead, (void *)0x08, 16); /* Disable chaining so we don't TIC to IPL2 channel program */ - ccwRead->chain = 0x00; + ccwRead->chain = 0; ccwSeek->cmd_code = CCW_CMD_DASD_SEEK; ccwSeek->cda = ptr2u32(seekData); @@ -206,7 +206,7 @@ static void run_ipl2(SubChannelId schid, uint16_t cutype, uint32_t addr) */ void dasd_ipl(SubChannelId schid, uint16_t cutype) { - PSWLegacy *pswl = (PSWLegacy *) 0x00; + PSWLegacy *pswl = (PSWLegacy *) 0x0; uint32_t ipl2_addr; /* Construct Read IPL CCW and run it to read IPL1 from boot disk */
0x00 looks odd, time to replace it with 0 or 0x0 (for pointers). Signed-off-by: Janosch Frank <frankja@linux.ibm.com> --- pc-bios/s390-ccw/dasd-ipl.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)