Gcc4.6.1 warning message for compiling Linux kernel kernel3.0 (original)

GCC4.6.1 warning message for compiling Linux kernel kernel3.0 (original)

Author: Yu Chao Email: yuchao86@gmail.com

[Yuchao @ yuchao-Latitude-E5410 linux-3.0] $ gcc -- version

Gcc (GCC) 4.6.1
Copyright 2011 Free Software Foundation, Inc.
This program is free software. Please refer to the source code copyright statement. This software has no guarantee;
Includes non-marketable and applicable warranties for a specific purpose.

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Drivers/ata/sata_sil.c: In the 'sil _ host_intr 'function:
Drivers/ata/sata_sil.c: 453: 14: Warning: 'serror 'In this function may not be initialized before use [-Wuninitialized]
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Drivers/block/drbd/drbd_main.c: In the 'drbd _ buildtag' function:
Drivers/block/drbd/drbd_main.c: 4187: 19: Warning: the comparison will always evaluate as 'true' for the address of '_ this_module' will never be NULL [-Waddress]
CC [M] drivers/block/drbd/drbd_strings.o
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CC [M] drivers/block/DAC960.o
Drivers/block/DAC960.c: In the function 'dac960 _ V2_ProcessCompletedCommand:
Drivers/block/DAC960.c: 5095: 30: Warning: Comparison between 'dac960 _ V2_IOCTL_Opcode_T 'and 'enum <anonymous>' [-Wenum-compare]
Drivers/block/DAC960.c: In the 'dac960 _ v1_enablememorymailboxinterface' function:
/Home/yuchao/dev/linux-3.0/arch/x86/include/asm/io. h: 63: 1: Warning: 'commandmailbox. bytes [12] 'may not be initialized before use [-Wuninitialized]
Drivers/block/DAC960.c: 1175: 30: Note: 'commandmailbox. Bytes [12] 'declares
========================================================== ========================================================== ========================================================== ==================

In the 'Copy _ from_user 'function,
Inline from 'parse _ command. part.1 'in fs/binfmt_misc.c: 422: 20:
/Home/yuchao/dev/linux-3.0/arch/x86/include/asm/uaccess_32.h: 211: 26: Warning: Call 'Copy _ from_user_overflow' and declare the warning property: copy_from_user () buffer size is not provably correct [enabled by default]

Arch/x86/kvm/emulate. c: In the 'virtuate _ sysexit 'function:
Arch/x86/kvm/emulate. c: 2054: 9: Warning: 'ss _ sel 'In this function may not be initialized before use [-Wuninitialized]
Arch/x86/kvm/emulate. c: 2053: 9: Warning: 'cs _ sel 'In this function may not be initialized before use [-Wuninitialized]

/Home/yuchao/dev/linux-3.0/arch/x86/include/asm/bitops. h: In the 'can _ boost. part.7' function:
/Home/yuchao/dev/linux-3.0/arch/x86/include/asm/bitops. h: 319: 2: Warning: it is not recommended to use memory input without the left value in the asm operand 1 [enabled by default]

WARNING: drivers/eisa/built-in.o (. data + 0xd0): Section mismatch in reference from the variable pci_eisa_driver to the function. init. text: pci_eisa_init ()
The variable pci_eisa_driver references
The function _ init pci_eisa_init ()
If the reference is valid then annotate
Variable with _ init * or _ refdata (see linux/init. h) or name the variable:
* _ Template, * _ timer, * _ sht, * _ ops, * _ probe, * _ probe_one, * _ console

WARNING: drivers/gpu/drm/radeon. o (. text + 0x4435b): Section mismatch in reference from the function radeon_get_clock_info () to the function. devinit. text: radeon_read_clocks_OF ()
The function radeon_get_clock_info () references
The function _ devinit radeon_read_clocks_OF ().
This is often because radeon_get_clock_info lacks a _ devinit
Annotation or the annotation of radeon_read_clocks_OF is wrong.

CC [M] drivers/gpu/drm/nouveau/nv50_display.o
Drivers/gpu/drm/nouveau/nv50_display.c: In the function 'nv50 _ display_unk10_handler:
Drivers/gpu/drm/nouveau/nv50_display.c: 628: 15: Warning: 'or' in this function may not be initialized before use [-Wuninitialized]
Drivers/GPU/DRM/nouveau/nv50_display.c: In the 'nv50 _ display_unk20_handler' function:
Drivers/GPU/DRM/nouveau/nv50_display.c: 751: 15: Warning: 'or' in this function may not be initialized before use [-wuninitialized]
CC [m] Drivers/GPU/DRM/nouveau/nv04_dac.o

Drivers/hwmon/applesmc. C: In the function 'applesmc _ get_entry_by_key:
Drivers/hwmon/applesmc. C: 390: 10: Warning: 'end' in this function may not be initialized before use [-wuninitialized]
CC [m] Drivers/hwmon/asc7621.o
Drivers/InfiniBand/HW/mlx4/QP. C: In the 'build _ mlx_header 'function:
Drivers/InfiniBand/HW/mlx4/QP. C: 1379: 30: Warning: The 'vlan 'In this function may not be initialized before use [-wuninitialized]
In File sorted ded from/home/yuchao/dev/linux-3.0/ARCH/x86/include/ASM/uaccess. h: 570: 0,
From include/NET/checksum. h: 25,
From include/Linux/skbuff. h: 28,
From Drivers/ISDN/hardware/AVM/b1.c: 17:
In the 'Copy _ from_user 'function,
Inline from 'b1 _ load_t4file 'in drivers/ISDN/hardware/AVM/b1.c: 179: 22:
/Home/yuchao/dev/linux-3.0/ARCH/x86/include/ASM/uaccess_32.h: 211: 26: Warning: Call 'Copy _ from_user_overflow' and declare the warning property: copy_from_user () buffer size is not provably correct [enabled by default]
In the 'Copy _ from_user 'function,
Inline from 'b1 _ load_config 'in drivers/ISDN/hardware/AVM/b1.c: 227: 22:
/Home/yuchao/dev/linux-3.0/ARCH/x86/include/ASM/uaccess_32.h: 211: 26: Warning: Call 'Copy _ from_user_overflow' and declare the warning property: copy_from_user () buffer size is not provably correct [enabled by default]
CC [m] Drivers/ISDN/hardware/AVM

Drivers/ISDN/hardware/eicon/message. C: In the 'mixer _ policy_update 'function:
Drivers/isdn/hardware/eicon/message. c: 11308: 54: warning: the array subscript is greater than the array boundary [-Warray-bounds]

Drivers/isdn/hardware/mISDN/hfcpci. c: In the 'hfcpci _ softirq 'function:
Drivers/isdn/hardware/mISDN/hfcpci. c: 2318: 2: Warning: Ignore the returned value of 'driver _ for_each_device 'declared with the warn_unused_result attribute [-Wunused-result]
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CC [M] drivers/media/dvb-core/dvb_ca_en50221.o
In file sorted ded from/home/yuchao/dev/linux-3.0/arch/x86/include/asm/uaccess. h: 570: 0,
From include/linux/poll. h: 14,
From drivers/media/dvb-core/dvbdev. h: 27,
From drivers/media/dvb-core/dvb_ca_en50221.h: 27,
From drivers/media/dvb-core/dvb_ca_en50221.c: 41:
In the 'Copy _ from_user 'function,
Inline from 'dvb _ ca_en50221_io_write 'to drivers/media/dvb-core/dvb_ca_en50221.c: 1314: 26:
/Home/yuchao/dev/linux-3.0/arch/x86/include/asm/uaccess_32.h: 211: 26: Warning: Call 'Copy _ from_user_overflow' and declare the warning property: copy_from_user () buffer size is not provably correct [enabled by default]

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Drivers/media/common/tuners/max2165.c: In the 'max2165 _ set_rf 'function:
Drivers/media/common/tuners/max2165.c: 203: 11: Warning: 'fraction' in this function may not be initialized before use [-Wuninitialized]
Drivers/media/common/tuners/max2165.c: 205: 19: Warning: 'quotient' in this function may not be initialized before use [-Wuninitialized]
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Drivers/ISDN/SC/init. C: In the 'identify _ Board' function:
Drivers/ISDN/SC/init. C: 487: 2: Warning: an integer is assigned to the pointer when 'readl''s 1st parameters are passed. No type conversion is performed. [enabled by default]
/Home/yuchao/dev/linux-3.0/ARCH/x86/include/ASM/Io. h: 57: 1: Note: The 'const volatile void * 'type is required, but the real parameter type is 'long unsigned int'
Drivers/ISDN/SC/init. C: 497: 2: Warning: an integer is assigned to the pointer when 'readl''s 1st parameters are passed. No type conversion is performed. [enabled by default]
/Home/yuchao/dev/linux-3.0/ARCH/x86/include/ASM/Io. h: 57: 1: Note: The 'const volatile void * 'type is required, but the real parameter type is 'long unsigned int'
Drivers/ISDN/SC/init. C: 507: 2: Warning: an integer is assigned to the pointer when 'readl''s 1st parameters are passed. No type conversion is performed. [enabled by default]
/Home/yuchao/dev/linux-3.0/ARCH/x86/include/ASM/Io. h: 57: 1: Note: The 'const volatile void * 'type is required, but the real parameter type is 'long unsigned int'
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Drivers/isdn/icn. c: In the 'icn _ sendbuf 'function:
Drivers/isdn/icn. c: 721: 4: warning: # warning TODO test headroom or use skb-> nb to flag ACK [-Wcpp]
In file sorted ded from/home/yuchao/dev/linux-3.0/arch/x86/include/asm/uaccess. h: 570: 0,
From include/net/checksum. h: 25,
From include/linux/skbuff. h: 28,
From include/linux/isdnif. h: 57,
From drivers/isdn/icn. h: 51,
From drivers/isdn/icn. c: 12:
In the 'Copy _ from_user 'function,
Inline from 'icn _ writecmd 'in drivers/isdn/icn. c: 1048: 22:
/Home/yuchao/dev/linux-3.0/ARCH/x86/include/ASM/uaccess_32.h: 211: 26: Warning: Call 'Copy _ from_user_overflow' and declare the warning property: copy_from_user () buffer size is not provably correct [enabled by default]
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Drivers/ISDN/hardware/misdn/hfcpci. C: In the 'hfcpci _ softirq 'function:
Drivers/ISDN/hardware/misdn/hfcpci. C: 2318: 2: Warning: Ignore the returned value of 'driver _ for_each_device 'declared with the warn_unused_result attribute [-wunused-result]
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Drivers/ISDN/hardware/eicon/message. C: In the 'mixer _ policy_update 'function:
Drivers/ISDN/hardware/eicon/message. C: 11308: 54: warning: the array subscript is greater than the array boundary [-warray-bounds]
In File sorted ded from/home/yuchao/dev/linux-3.0/ARCH/x86/include/ASM/uaccess. h: 570: 0,
From include/NET/checksum. h: 25,
From include/Linux/skbuff. h: 28,
From Drivers/ISDN/hardware/AVM/b1.c: 17:
In the 'Copy _ from_user 'function,
Inline from 'b1 _ load_t4file 'in drivers/ISDN/hardware/AVM/b1.c: 179: 22:
/Home/yuchao/dev/linux-3.0/ARCH/x86/include/ASM/uaccess_32.h: 211: 26: Warning: Call 'Copy _ from_user_overflow' and declare the warning property: copy_from_user () buffer size is not provably correct [enabled by default]
In the 'Copy _ from_user 'function,
Inline from 'b1 _ load_config 'in drivers/ISDN/hardware/AVM/b1.c: 227: 22:
/Home/yuchao/dev/linux-3.0/ARCH/x86/include/ASM/uaccess_32.h: 211: 26: Warning: Call 'Copy _ from_user_overflow' and declare the warning property: copy_from_user () buffer size is not provably correct [enabled by default]
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WARNING: drivers/mfd/built-in.o (. data + 0x24cc): Section mismatch in reference from the variable ab3550_driver to the function. init. text: ab3550_probe ()
The variable ab3550_driver references
The function _ init ab3550_probe ()
If the reference is valid then annotate
Variable with _ init * or _ refdata (see linux/init. h) or name the variable:
* _ Template, * _ timer, * _ sht, * _ ops, * _ probe, * _ probe_one, * _ console

++
WARNING: drivers/net/phy/built-in.o (. init. text + 0x4c2): Section mismatch in reference from the function mdio_gpio_init () to the function. exit. text: mdio_ofgpio_exit ()
The function _ init mdio_gpio_init () references
A function _ exit mdio_ofgpio_exit ().
This is often seen when error handling in the init function
Uses functionality in the exit path.
The fix is often to remove the _ exit annotation
Mdio_ofgpio_exit () so it may be used outside an exit section.

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Drivers/misc/lkdtm. c: In the 'cursive _ loop. constprop.2 'function:
Drivers/misc/lkdtm. c: 276: 1: warning: the stack frame contains 1028 bytes, exceeding 1024 bytes [-Wframe-larger-than =]
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In file encoded ded from drivers/net/tokenring/smctr. c: 43: 0:
Include/linux/mca-legacy.h: 12: 2: warning: # warning "MCA legacy-please move your driver to the new sysfs api" [-Wcpp]
Include/linux/mtd/map. h: 330: 11: Warning: 'R. x [0] 'In this function may not be initialized before use [-Wuninitialized]

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Drivers/net/pcmcia/nmclan_cs.c: In the 'nmclan _ config' function:
Drivers/net/pcmcia/nmclan_cs.c: 628: 3: Warning: 'pcmcia _ request_exclusive_irq 'is not recommended (declared in include/pcmcia/ds. h: 201) [-Wdeprecated-declarations]
Drivers/net/pcmcia/ibmtr_cs.c: In the 'ibmtr _ config' function:
Drivers/net/pcmcia/ibmtr_cs.c: 195: 5: Warning: 'pcmcia _ request_exclusive_irq 'is not recommended (declared in include/pcmcia/ds. h: 201) [-Wdeprecated-declarations]
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Drivers/net/wan/cycx_x25.c: In the 'hex _ dump' function:
Drivers/net/wan/cycx_x25.c: 1030: 1: warning: the stack frame contains 1040 bytes, exceeding 1024 bytes [-Wframe-larger-than =]
Drivers/net/wireless/prism54/isl_ioctl.c: In the 'prism54 _ hostsp' function:
Drivers/net/wireless/prism54/isl_ioctl.c: 2733: 14: warning: the array subscript is greater than the array boundary [-Warray-bounds]
Drivers/net/wireless/airo. c: In the 'encapsulate' function:
Drivers/net/wireless/airo. c: 1421: 15: warning: the array subscript is greater than the array boundary [-Warray-bounds]
Drivers/NET/wireless/ray_cs.c: In the 'rx _ authenticate. isra.13 'function:
Drivers/NET/wireless/ray_cs.c: 2439: 15: warning: the array subscript is greater than the array boundary [-warray-bounds]
Drivers/NET/CNIC. C: In the 'cnic _ cm_open 'function:
Drivers/NET/CNIC. C: 4047: 2: Warning: The comparison will always evaluate as 'true' for the address of 'cm _ ulp_ops 'will never be null [-waddress]
Drivers/NET/CNIC. C: In the 'cnic _ start_bnx2_hw 'function:
Drivers/NET/CNIC. C: 4556: 1: warning: the stack frame contains 1168 bytes, exceeding 1024 bytes [-wframe-larger-than =]
Drivers/SCSI/aic94xx/aic94xx_sds.c: 597: 21: Warning: 'offs' in this function may not be initialized before use [-wuninitialized]
Drivers/SCSI/libsas/sas_ata.c: 80: 3: Warning: The case value '2' is not in the enumeration type 'enum exec_status '[-wswitch]
Drivers/SCSI/lpfc/lpfc_bsg.c: 1662: 5: Warning: 'mbxstatus' in this function may not be initialized before use [-wuninitialized]
Drivers/staging/comedi/Drivers/pcmmio. C: 498: 22: Warning: array subscript is greater than array boundary [-warray-bounds]
Drivers/staging/comedi/drivers/pcmmio. c: 561: 37: Warning: 'irq [1] 'In this function may not be initialized before use [-Wuninitialized]
Drivers/staging/comedi/drivers/vmk80xx. c: In the 'vmk80xx _ cnt_rinsn 'function:
Drivers/staging/comedi/drivers/vmk80xx. c: 995: 37: Warning: 'reg [0] 'In this function may not be initialized before use [-Wuninitialized]
Drivers/staging/iio/industrialio-core.c: In the function 'iio _ device_add_event_sysfs.isra.3:
Drivers/staging/iio/industrialio-core.c: 925: 7: Warning: 'mask' in this function may not be initialized before use [-Wuninitialized]
Drivers/telephony/ixj. c: In the 'Add _ caps' function:
Drivers/telephony/ixj. c: 5930: 38: Warning: The operation result on 'J-> caps' may be undefined [-Wsequence-point]